Resonance Terms of Service
These terms ("Resonance Terms") govern your use of Resonance, the music streaming service operated by APERTURESyndicate OÜ ("APERTURESyndicate", "AS", "we", "us", "our") as part of the APERTURESyndicate platform. They apply in addition to our general Terms of Service, Privacy Policy, Acceptable Use Policy, and Copyright & DMCA Policy. Where these Resonance Terms conflict with the general Terms of Service on a matter specific to Resonance, these Resonance Terms control.
By creating an account, streaming a track, following an artist, creating a playlist, or otherwise using Resonance, you accept these Resonance Terms.
These terms are published in good faith and are pending review by qualified EU/Estonian legal counsel; nothing here is a substitute for formal legal advice.
1. What Resonance is
Resonance is a streaming service giving you access to a catalogue of official releases and artist-uploaded tracks, together with a personal library, playlists, social features (following, "friends listening"), invite-based Listen Together sessions, and optional paid plans.
Some parts of Resonance are covered by their own, more specific documents, which form part of this agreement by reference:
- Premium & Subscription Terms — the Free, Premium, Symphony, Family and Creator plans, family sharing, and offline downloads
- Creator & Distribution Terms — uploading and distributing music as an artist
- Royalty & Payout Policy — how artist earnings are calculated
- Locker Policy — uploading your own audio files, and which of them are public
- Community Guidelines — expected conduct across social features
- Privacy Addendum — Resonance-specific data practices
2. Your account, age, and identity
You must be at least 16 years old to hold an APERTURESyndicate account and to use Resonance. If you are under 16, you may not use the service. Where local law sets a higher age for consenting to the processing of your personal data, that higher age applies to you.
Resonance runs on your single APERTURESyndicate account (AS Auth / SSO). Everything you do on Resonance — streaming, following, playlists, Listen Together — is tied to that account.
Your internal handle is never shown publicly. It is an internal identifier used for account management and is never displayed to other users, in any API response, or in any third-party integration. What other users see is your nickname and avatar, which you control from your profile settings.
You are responsible for keeping your account credentials secure and for all activity that happens under your account. If you believe your account has been compromised, contact us immediately at [email protected].
3. Your licence to use Resonance
Subject to these Resonance Terms and for as long as your account remains active (and, for Premium-gated content, for as long as your subscription remains active), we grant you a personal, non-exclusive, non-commercial, non-transferable, revocable licence to stream and listen to content made available through Resonance.
This licence lets you listen. It does not let you:
- Rip, download, record, extract, or otherwise create a persistent local copy of catalogue content (official releases or artist-uploaded tracks), except through features we explicitly provide for that purpose — today that means offline downloads on a paid plan, on the terms set out in the Premium & Subscription Terms;
- Redistribute, re-upload, broadcast, or make catalogue content available to anyone outside your own account, whether for free or for payment;
- Circumvent any technical measure that limits streaming, downloading, or offline access.
4. Playlists, library, and "Add to Library"
You can build your own playlists and library, and you can follow other users' public playlists using Add to Library. Adding a playlist to your library creates a live reference to the original playlist, not a copy — if the original creator updates, reorders, or removes tracks, or deletes the playlist, your library reflects that change. We are not responsible for a followed playlist changing or disappearing because its owner edited or removed it.
You are responsible for the playlists you create, including their titles, descriptions, and cover art. Don't use this space to impersonate others, distribute prohibited content, or violate the Community Guidelines.
5. Social features and Listen Together
Resonance includes social features — following other users, seeing what friends are listening to, and joining or hosting Listen Together sessions. Sharing your listening activity is off by default and you turn it on yourself; what you then share with others is governed by the Privacy Addendum.
Listen Together works by invitation: you create a session and invite people you follow, and they accept or decline. There is no session code and no way for an uninvited person to join. How many people can be in a room depends on the host's plan and is set out in the Premium & Subscription Terms.
When you participate in a Listen Together session or interact with other users' profiles and playlists, the Community Guidelines apply in full.
6. Ownership of content
Catalogue content. Tracks, albums, cover art, and metadata in the Resonance catalogue belong to the artists, labels, and other rightsholders who created or uploaded them. Nothing in these Resonance Terms transfers ownership of catalogue content to you or to us; how artists license their work to Resonance is set out in the Creator Distribution Terms.
Your content. You retain ownership of the content you create on Resonance — playlist titles and descriptions, cover art you upload, and your profile information. By submitting it, you grant us a non-exclusive, worldwide, royalty-free licence to host, store, reproduce, and display it as needed to operate Resonance (for example, showing your playlist to users who follow it). This licence ends with respect to specific content when you delete that content or close your account, subject to a reasonable period to remove cached and backup copies.
Local tracks. Resonance can also play audio that lives on your own device — tracks you add through Local Tracks, a watched folder, or a companion app. For these, Resonance acts purely as a player: the audio file itself is not uploaded to or stored on our servers and it stays on your device. You may only add local tracks that you own or otherwise hold a lawful right to keep a personal copy of.
Two things about a local track do leave your device, and you should know about both:
- The cover image. If you set your own cover image for a local track, that image (and only the image) is uploaded to our public media storage so it can be displayed — in Listen Together and, if you enable it, in your Discord "now playing" card. It is served from a public, unauthenticated address. By uploading it you confirm you hold the right to use it.
- The title and artist, where you have switched on activity sharing or Discord presence.
If you choose a local track as your profile anthem or put one in your profile showcase, the audio itself is uploaded to our storage and becomes playable by anyone who can see your profile. That is the whole point of those features, the app warns you before you confirm, and it is described in the Locker Policy.
Adding audio or cover art you have no right to is prohibited. Where we become aware of infringing content — for example through a rightsholder notice under our Copyright & Takedown Policy — we may remove it and temporarily suspend the account, and terminate it for serious or repeated violations. APERTURESyndicate does not pre-screen local tracks or the covers you upload for them; responsibility for their legality rests with you.
7. Prohibited conduct
In addition to the general Acceptable Use Policy, which applies in full to Resonance, you may not:
- Artificially inflate or manipulate stream counts, plays, followers, or other metrics — including through bots, scripts, click farms, or repeated automated playback;
- Scrape, crawl, or systematically extract the catalogue, metadata, or user data through any means other than an API we explicitly provide for that purpose;
- Attempt to bypass rate limits, storage quotas, download restrictions, or other technical limits we apply to an account or plan;
- Use another person's account, or share account credentials to circumvent per-account limits or features gated behind a paid plan. Sharing a paid plan with other people is done through the Family plan, on the terms in the Premium & Subscription Terms — not by handing out your password;
- Use Resonance to distribute content that infringes copyright.
We may detect and act on abusive listening patterns automatically, and may suspend or terminate accounts that engage in the conduct above, consistent with the Acceptable Use Policy.
8. The catalogue API
Resonance has a public catalogue API. It exists so people can build things around the music — a site for an artist, a Discord bot that shows what a friend is playing, a visualiser, a chart, a scrobbler, a personal client. It is not a way to take the catalogue somewhere else.
What you can get, and how
Get a key from the developer portal. It is self-serve: create it and start. No application, no review, no wait. Requests are rate-limited per key, and the key is how a specific integration gets throttled or revoked rather than everyone paying for one person's behaviour.
What the API returns:
| Available | Not available |
|---|---|
| Artists — name, bio, genres, links, avatar and banner | Full-length audio |
| Tracks and albums — titles, cover art, duration, release year, credits | Lyrics, and in particular word-level synced lyrics |
| Public charts, catalogue listings and search | Anyone's listening history, presence, playlists or account data |
| 30-second preview audio per track | Anything behind a paid plan or a private locker |
Previews are 30 seconds, and that is deliberate. A preview is served over a short-lived signed URL. It is there so a listener can hear what a track is before clicking through — it is not a substitute for the track, and it is not to be stitched, cached into a library, or assembled into anything longer.
Lyrics are not exposed. Word-level synced lyrics are the most laborious thing we produce and the rights in them are frequently separate from the rights in the recording. They stay inside Resonance.
Attribution is required
Wherever your application shows data from this API, it must show:
- the artist's name, and
- a clickable link back to that track's or artist's page on https://resonance.aperturesyndicate.com.
Not buried in an "about" screen — next to the data itself. Artists agreed to publish on Resonance, not to have their work turn into anonymous rows in someone else's product.
Personal and non-commercial use only
Access is granted for personal, non-commercial use: side projects, hobby apps, artist pages, research, tools you and your friends use.
You may not, without a separate written agreement with us:
- charge for access to your application, put it behind a paywall or a subscription, or sell the data;
- run advertising against catalogue data — the artist earns nothing from your ad impressions;
- use the data to train machine-learning models, or to build or improve a competing catalogue or recommendation service.
If your project outgrows this — if it is becoming something people pay for — write to [email protected]. We would rather have that conversation than revoke a key.
What the API must never be used for
These are the hard lines. Crossing one of them ends access immediately and without warning, and may end your account:
- Redistribution or retransmission. Do not stream, host, mirror, embed as full playback, or otherwise make Resonance audio available through your own music service, app, site or platform. The catalogue is licensed to us for Resonance, not for you to run your own streaming service on top of it.
- Download services. Do not build, operate or feed a tool that lets people download tracks — the "grab it from YouTube or Spotify" category of service. Do not use the API to locate or match a track in order to fetch the audio from somewhere else.
- Circumventing the preview. Do not attempt to obtain full-length audio through the API, reconstruct a track from previews, or bypass the signed-URL mechanism.
- Bulk extraction. Do not systematically copy the catalogue. Fetch what your application needs, when it needs it. Building a full offline mirror of our catalogue is not an integration.
- Passing anything off as your own. Do not present the catalogue, the metadata or the artwork as your product's own content.
Keep it current, and honour deletions
Cache what you need for performance, and refresh it. When a track, album or artist is removed from Resonance, it must disappear from your application too — within 7 days at the latest. An artist who takes a release down, or a rights holder who has it removed, must not find it still live in somebody's third-party app. This obligation survives the end of your access.
The API can change
It is offered as-is, with no uptime guarantee. Endpoints and response shapes can change, and the API can be restricted or withdrawn. We will give reasonable notice for a breaking change where we can.
Section 7 of the Developer & API Terms applies to this API as well; where that document and this section differ about Resonance, this section is the more specific one and controls.
9. Paid plans
Resonance offers optional paid plans — Premium, Symphony, Family, and Creator — each with additional features and limits. Pricing, what each plan unlocks, family sharing, offline downloads, and what happens when a paid period ends are set out in full in the Premium & Subscription Terms, which form part of this agreement. Billing, auto-renewal, cancellation, and refunds are governed by our platform-wide Refunds & Cancellation policy.
Downgrading or cancelling a plan reduces or removes access to features gated behind it; it does not, by itself, delete your library, playlists, follows, or uploaded files.
10. Termination
You may stop using Resonance or close your account at any time through your account settings. We may suspend or terminate your access to Resonance where you breach these Resonance Terms, the Acceptable Use Policy, or the Community Guidelines, where required by a valid legal process, or where continued access would expose us or others to legal or security risk.
Termination ends your licence to stream catalogue content under Section 3, and with it your licence to play any offline downloads. It does not affect the local files on your own device — those were never stored on our servers — and it does not entitle you to a refund of any subscription period already paid for, except as described in the Refunds & Cancellation policy.
11. No warranty and limitation of liability
Resonance is provided "as is" and "as available." We do not guarantee uninterrupted or error-free service, that any specific track or catalogue will remain available, or that a followed playlist will continue to exist or stay unchanged. To the maximum extent permitted by applicable law, APERTURESyndicate OÜ is not liable for indirect, incidental, or consequential damages — including lost data, lost enjoyment, or loss of access to a playlist or library — arising from your use of Resonance. Nothing in this section limits liability that cannot be excluded under Estonian or EU law, including in relation to consumer rights.
12. Changes to these terms
We may update these Resonance Terms as the product evolves. Material changes will be reflected in the lastUpdated date above and, where they meaningfully affect your rights, announced by email or in-product notice. Continued use of Resonance after a change takes effect means you accept the updated terms.
Contact
- Resonance support and account questions: [email protected]
Operator APERTURESyndicate OÜ · Registry code 17384111 · VAT EE102972654 Priisle tee 8, Lasnamäe linnaosa, Tallinn, Harju maakond, 13914, Estonia Company registration details
These Resonance Terms are governed by the laws of Estonia, with the courts of Tallinn having jurisdiction, and are subject to the GDPR, the EU Digital Services Act, and applicable Estonian and EU consumer-protection law. The English-language version of these Resonance Terms is the controlling version.
Version history
- v1.3 — 2026-08-01 — Added Section 8, the catalogue API: a self-serve key from the developer portal, what the API returns (metadata and 30-second previews) and what it never returns (full audio, lyrics, anyone's listening data), mandatory artist attribution with a link back to Resonance, personal and non-commercial use only, and the hard prohibitions — no retransmission through another music service, no download tools, no bypassing the preview, no bulk extraction. Removals must propagate to third-party apps within 7 days. Former Sections 8-11 renumbered to 9-12.
- v1.2 — 2026-07-31 — Removed every reference to Local File Sharing, a feature that no longer exists, and to "trial terms", which never existed — there is no free trial. Added a minimum age of 16. Named the offline-download feature as the permitted exception to the no-local-copy rule. Stated that Listen Together is invite-based, not code-based. Expanded the local-tracks clause: cover images go to public storage, and an anthem or showcase track is uploaded and made publicly playable. Section 8 now covers all four paid plans.
- v1.1 — 2026-07-16 — Added a "Local tracks" clause to Section 6: local-track audio stays on your device (Resonance acts as a player); cover art you upload is your responsibility and you confirm your rights to it; unlicensed content may lead to suspension.
- v1.0 — 2026-07-02 — Initial publication.