Those kids have great taste. I always wonder if my kids will have more open ears when they’re all grown up than others because they are hearing a lot of free and improvised music. I think that people are from birth really are a tabula rasa in that sense as both my boys never responded negatively to even the freest of all jazz. I still remember me playing Albert Ayler for my 2 year old the first time and he didn’t respond to it in any way, like it was some pleasant background music. My wife on the other hand still has difficulties with even the classic Coltrane quartet or Charlie Parker. It might have to something with how she grew up right? If your brains are used to a certain structure in music, you’re probably going to have trouble listen to more unstructured music.
Anyway, you’re doing a great job bringing them up with the greatest jazz players of all time