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 10 YEARS OLD now for my birthday in 19 july and 1 melody is coming for you, thanks for play midis NEW MELODIES IN THE FUTURE. NEXT GOAL: 10k plays or 10 suscribers or 100 sequences , new black midi playable , thanks for 5000 plays , THANK YOU❤️!! , but is my new account by my account before is dead.