Headphones, they can't hear you, and more importantly you can't hear them.
Drummers have the same problem I imagine, "Here is the drum part to ...". Most people really would only recognize the guitar or piano part of most songs. Even a song like "Message in a Bottle" a non musician is probably not going to recognize the guitar, bass or drum parts on their own even as unique as they are. If you played even the guitar part to some song they probably wouldn't recognize it either, that's what I'm getting at, you need a melody. Just play a melody on yer' bass!
I would bet the majority of people don't even know there is a guitar and a bass guitar and the differences between the two.
Drummers have the same problem I imagine, "Here is the drum part to ...". Most people really would only recognize the guitar or piano part of most songs. Even a song like "Message in a Bottle" a non musician is probably not going to recognize the guitar, bass or drum parts on their own even as unique as they are. If you played even the guitar part to some song they probably wouldn't recognize it either, that's what I'm getting at, you need a melody. Just play a melody on yer' bass!
I would bet the majority of people don't even know there is a guitar and a bass guitar and the differences between the two.

