乐王智能钢琴 app for iPhone and iPad 4.8 ( 2848 ratings ) Music Education Developer: 世哲 陈 Free Current version: 1.07, last update: 6 years ago First release : 06 Jan 2018 App size: 217.73 Mb 全力打造优质智能化教育产品。乐王，让音乐更快乐！