Sometimes you play with someone and sometimes you play with someone else. Everyone's different. You could be friends with anyone but you have certain friends. You may loose friends over time and some friends are closer than others. It's not all about the talent of every musician, it's about the person him/herself too.

Being musician isn't just having the grades, it's about the way you express yourself into the music. Some combinations just don't work out the way it should. It just happens.
