Simple but powerful piano for mobile. It has all features you want. [Function Introduction] ● A variety of instruments ● 1st and 2nd stage piano ● Transpose ● Sustain ● MIDI, MIC recording ● Recording playback ● Intuitive user interface This app is needed the following permissions. ● [Mandatory] Full network access Use a small amount of mobile network (5G, LTE, etc.). ● [Mandatory] View network connections Check the status of your mobile network (5G, LTE, etc.). ● [Mandatory] Prevent device from sleeping Used to prevent the screen off during playback recording file. ● [Optional] Record audio Used to record piano sound.