YDP Grand Piano — Endless Echoes / 漫无止尽的回响

Original recordings: Zenph Studios Yamaha Disklavier Pro Piano Multisamples for OLPC, recorded by Dr. Mikhail Krishtal and his team at Zenph Studios.
Soundfont and modifications: Roberto (roberto@zenvoid.org), FreePats project.
Source: https://freepats.zenvoid.org/Piano/acoustic-grand-piano.html
License: Creative Commons Attribution 3.0
https://creativecommons.org/licenses/by/3.0/

Local processing: notes were extracted from YDP-GrandPiano-20160804.sf2 and transcoded to MP3 for Vocal Coach. Endless Echoes reuses its seven root-MIDI files without modification. Playback transposes to nearby notes and applies a short gain envelope.

The adjacent ydp/manifest.json retains Vocal Coach's sample metadata and naming history. Root MIDI notes: 48, 54, 60, 63, 66, 69, 72 (C3–C5).