You will need an OTG (on-the-go) adapter for your android and a
USB-MIDI cable. This app generates random music for your MIDI
device (sound module keyboard ...)
USBMIDIConnect / What's New in v3.0
Added a seekbar for Tempo with 20 selections from classical music
nomenclature. Removed code that was known to cause "No Such Method
Error" upon tapping the detect devices button on some Android
devices. Completed the Note Duration concept, now distinguished
from tempo, to give a more full user experience.