Pitch 1024
A universal MCP app · by Chardonn.AI

Find your pitch — in a musician's voice.

A pocket pitch pipe inside your AI chat — reference notes, starting pitches for any key, harmony, and ear-training. Every note is a real musician singing, not a tuner's beep: match your pitch to a voice worth matching. Works in ChatGPT and Claude.

Add it to your chat App Store Google Play

Pitch 1024 is also a standalone iOS / Android app — this brings the same pitch pipe into ChatGPT and Claude.

What it can do

Give a pitch
give_pitch
A reference note — or a few — in the musician's voice you choose. Tuning, a starting note, a melody to match.
Voices in harmony
give_harmony
Several vocalists each take a note of a chord and sound them together — in stereo, or in full 3D around you (headphones).
Starting notes
starting_notes
Hand a singer or an a cappella group their starting pitches for any key — SATB-aware.
Sing a progression
chord_progression
A chord progression, sung steadily and looping — each chord can even have its own vocalist.
Train your ear
pitch_quiz
Name-the-note, interval, and chord-quality drills — the answer stays hidden until you guess, then your AI grades you and coaches your next step.

The musicians

A beep gives you the frequency. A fine voice gives you the sound to reach for.

Six accomplished musicians lent their voices to Pitch 1024 — every note is a real performance, recorded, not synthesized.

Soulman TopDescantsoaring top
LéaSopranoclear, high
Blue JayAltobright mid-high
SoulmanTenorsoulful mid
Harry KimBaritonewarm low-mid
Deep BassBassthe foundation — lowest, rich

Try saying…

Sing a chordHave a Cmaj7 sung together — Deep Bass on C, Soulman on E, Blue Jay on G, Léa on B.
Surround me (3D)Put my headphones on — have the six voices sing a Cmaj7 all around me, slowly orbiting.
Roll it inRoll a C major chord in one voice at a time, then hold it together.
Meet the musiciansPlay an A in Léa's voice, then in Deep Bass — I want to hear the difference.
Starting notesWe're singing in F major — give our SATB quartet their starting notes.
Pass the chordLéa sings a C, then Soulman a C, Harry Kim an F, Blue Jay a G — 2.5 seconds apart, looping.
Major or minor?Play a C major chord, then change one note so I hear C minor — explain the difference.
Tuning referenceGive me G C E A one at a time to tune my ukulele.
Quiz my earDrill me on intervals with Harry Kim — keep it hidden until I guess, and track my streak.
Add it to your chat

Add it to your chat

Takes about a minute — no account, no payment, no coding. Pitch 1024 is a universal MCP app, so the same connector works in ChatGPT and Claude.

In ChatGPT

  1. Settings → Connectors → Advanced → Developer mode.
  2. Add a connector with the URL above — authentication “No authentication”.
  3. Open a chat, ask for a pitch — a playable card appears. Tap it to hear it.

In Claude

  1. Settings → Connectors → Add custom connector.
  2. Paste the URL above — no authentication.
  3. Start a chat, ask for a pitch, and tap the card to hear it.
ChatGPT New App dialog with name Pitch 1024, server URL https://mcp.pitch1024.com/mcp, No Auth
In ChatGPT — Developer mode → add the URL, No Auth.
Claude Add custom connector dialog with name Pitch 1024 and URL https://mcp.pitch1024.com/mcp, no authentication
In Claude — paste the URL, leave auth empty, Add.

Needs a host that supports interactive MCP Apps UI (ChatGPT and Claude do). On a tool-only MCP client the notes still come back as text, but the tappable pitch pipe won't render.