It is a set of php files allowing you to create the very music (no extra features yet like indent, colors etc) to copy paste it as input for lilypond. You can edit and add your buttons(no programming skills).
Multi-MPD (Music Player Daemon) is a web-based client for controlling multiple instances of MPD with multiple outputs each, managing output routing, playlists, and browsing and loading net radio streams (eg Shoutcast, Sky.FM/Digitally Imported).
High quality real-time MIDI sound source for the pianist
The Pianist Box features 256 polyphony CD quality real-time sound source. Commercial products either cost premium (e.g. USD5000 for a digital piano), low performance (e.g. 64 polyphony) and limited sounds (e.g. 128 non-replaceable instruments). The Pianist Box overcome these problem by highly optimizing open source system for a limited set of hardware.