Well, I think music for kids is never anything but experimental is it?
I started getting interested in the notes that I could hear being generated when I hammered on while playing a classical guitar.
As an improviser I'm now pretty comfortable with trios, so I'm thinking of working up to quartets.
If you write songs you have an idea how they're going to sound.
There's an awful lot of resources that can be drawn upon in an improvised music concert.
Improvised music involves a lot of intuition and I like developing intuition.