1, Normal children(who never study music) could learn to play a simple full song within 10mins to 30mins, normal adult only need 2 mins studying to play a simple song. 2, With one instrument, you can play 13 sounds and the sounds are the same as real professional music instruments. 3, It will help children raise the music interest(because they will feel very confident when they can study to play songs quickly instead of playing noise for a long time), and help practice flexible fingers. 4, It is only hand small like an egg, so very easy to take away and play music any place, any time. During the Cov19 period, people need a lot of entertainment at home