A band playing on stage in a club.
A rock band is playing at the 9:30 Club
a band don't have to be a rock band and a club could be anyone
Not all bands are a rock band. Just because a band is playing at a club does not mean it is the 9:30 Club.
Just because they are a band does not mean that they are a rock band. Just because they are playing at a club does not mean that they are playing at the 9:30 club.