In ChatGPT: open Plugins and search "Pitch 1024", then add it.
In Claude: Settings → Connectors → Add custom connector, and paste https://mcp.pitch1024.com/mcp (leave authentication empty).
Then ask, for example, "Give me an A in Léa's voice." A pitch pipe appears in the chat, and the voice sings the note.
Common questions
The voices are real people. Every note is a recorded performance by one of five musicians — not a synthesized beep.
3D audio sounds flat. The "surround" and orbit effects need headphones; on speakers they fall back to plain stereo.
Do I need an account or payment? No separate Pitch 1024 account, no payment. For the in-chat app you just need the ChatGPT or Claude account you already use.