Conversation so far:
What was Billy Corgan's childhood like?
Billy Corgan alleges that his stepmother was physically and emotionally abusive to him.
What sports did Billy Corgan play during childhood?
Billy Corgan, who grew much faster than his fellow students, was a strong athlete in elementary school and was a member of his Marquardt Middle School baseball team.
Was Billy Corgan into music as a child?
Billy Corgan decided to start playing guitar when he went over to a friend's house and saw his friend's Flying V.
What else was Billy Corgan interested in as a child besides music?
Billy Corgan collected baseball cards, amassing over 10,000 and listened to every Chicago Cubs game.
Are there any other interesting aspects about Billy Corgan's childhood besides collecting baseball cards and playing guitar?
Not finding the Chicago music scene to his liking, Billy Corgan moved from Chicago to St. Petersburg, Florida in 1985 with The Marked.

Question: Was that the first band he was part of?
Self-contained rewrite: Was The Marked the first band Billy Corgan was part of?