At least 95% of the popular music we hear is in 4/4 time, so people who never hear anything else must think there’s no other way. However, it is ideal for app makers, because in 4/4 anyone without any musical background can make music that sounds good, especially if you limit the number of building blocks with which that happens. That is the starting point of SoundForest. In this app you place trees and other objects from a forest (hence the name) in a landscape and this automatically creates a composition. Nice toys for small and big children.
Click the link above to download for free
SoundForest – Making music with icons