Thread: Vague memory of this story

Many years ago, I remembering reading a story about 4 young people who were older than they looked, but slow to mature physically because they were a new variation of humanity. I seem to recall one or more of them had a musical group (on the moon?), but each of them had some area of expertise in which they made enough money to finance their plans to leave the solar system. They may not all have been musicians. At the end of the story, they are...

I know I've read it, but I can't remember author or title. It is a little bit like Children of the Atom, by Wilmar H. Shiras, which is one of my favorite sf novels of all time.

It does sound familiar. I also have a vague recollection of a group of children with powers and a sometimes uneasy relationship. One of the 'Gestalt' stories perhaps, by Theodore Sturgeon?