https://wxyhly.github.io/Eop/ 笔记本电脑键盘友好型在线键盘钢琴兼Midi编辑器，支持多轨道录制、导入导出midi文件。也支持手机触摸弹奏。 详细说明与教程见《给自己量身打造一个电脑钢琴》 周杰伦《最伟大的作品》演奏视频：

An online laptop keyboard friendly piano player and Midi editer which allows you to import/export Midi file. Multichannel recording and finger touches on mobilephones are also supported.