hi, i believe midi´s and ART MIDI. HAVE 3 levels of piano: easy , medium and hard , you get try new midis and try our music and HAVE 9 YEARS OLD , thanks for play midis NEW MELODIES IN THE FUTURE. NEXT GOAL: 5k plays or 7 suscribers or 75 sequences , new black midi playable , thanks for 4250 plays , THANK YOU❤️!!!