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THIRI

Generates and voices harmony parts for a live voice or horn against a chord chart, deciding notes deterministically and reproducibly.

VoiceAPIFor developersDesktop app
thiri.ai ↗
At a glanceswept 2026-10-12

not read yet

Use

For
Players, writers, arrangers and developers wanting theory-correct harmony in their tools.
Price
From $47 oncepricing page, read 2026-10-13 ↗
Activity
Actively maintainedsite updated 7 days ago
Company
Domain since 2026domain registered
Runs as
APIDesktop app
AlternativesSet it up for my teamIs THIRI yours? Claim the card →
What people do with itread off thiri.ai on 2026-10-13
  • Practice over generated chord changes with legal voicings
  • Sketch progressions and reharmonise them in the browser
  • Score AI video edits with harmony layers and stems
The companyeach fact with its source · read 2026-10-13
  • Domain since2026domain registered
How a program reaches itfound, not claimed · read 2026-10-13
  • MCP serverai.thiri/chord-intelligenceverified in the MCP registry
  • Stateanswers, 4 toolschecked 2026-10-13
  • Address to connectmcp.thiri.ai/mcp
  • API docsthiri.ai/developers.htmlthe vendor's page ↗

MCP server details →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Most used in Voiceby use, among tools still maintained — this tool shares no tags yet

Figure and bar: visits/mo, estimate · year: online since

All Voice tools →

Questions this page answers
  • What is THIRI?

    Generates and voices harmony parts for a live voice or horn against a chord chart, deciding notes deterministically and reproducibly. It is listed in the Atlas under Voice.

  • Who is THIRI for?

    Players, writers, arrangers and developers wanting theory-correct harmony in their tools.

  • How much does THIRI cost?

    Paid plans start at $47 once, per THIRI's pricing page on 2026-10-13.

  • Do people use THIRI?

    Little sign of use.

  • Is THIRI still maintained?

    Actively maintained: site updated 7 days ago.

Not quite it? Describe the job

beta

Five tools from the Atlas that fit it, each judged against what you wrote.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.