Sounds of Music - Wave PianoIf you want to make beautiful music, you must play the black and the white notes together and when you have this Sounds of Music Flexible Wave Piano. You can make beautiful music anywhere you go because it is flexible enough to fit even in your backpack! The piano with full 61 Key Midi, has all the connection port you need. It has a speaker out and headphones out port. Digital Tune setter by number. It's portable, you can plug it in with the included