The Three Kinds of Interplanetary Science Fiction

1) Everybody listens to the same bands
2) Every planet has its own bands
3) Every region on the planet has its own bands

Obviously there's going to be some galactic superstars and some local specialties, but in a normal week, seven of the top ten songs the average person hears are shared X far.

Speaking of Fantasy Races

Make sure to give your snakepeople a lot of hisstory. Babang! Play me out, Dustin!

The Main Thing Star Trek Probably Got Wrong

A space cruiser should have its own band. Maybe they had that in some episode, but the point is, put a band on your space cruiser.