Canorus是一款跨平台的乐谱编辑器。它可以自己定制乐曲的长度，声部，可以用MIDI来进行乐谱回放，并且支持MIDI, MusicXML, ABC Music, MusiXTeX和LilyPond等格式。-Canorus is a free cross-platform music score editor. It supports an unlimited number and length of staffs, polyphony, a MIDI playback of notes, ch

VB开发的电子琴，有录音，回放功能，界面很酷。-a Piano soft developed by VB,It has record,playback function with perfect interface.