In the band, whenever we are composing a new song, the lead guitar makes the melody for a song from the way how the singer sings the lyrics any of us in the band made, he kinda makes the guitar "sing" the same thing...
my questions for TB are:
Can a bass player do this? and, what can i do to help out?
And this is something i really want to know, because each time they do this, drumer, rithmn guitar and me are just fooling around picking our nose out or eating some chips

and we cant jam something just because those two cant hear themselves, and this can go on for 1 hour or more...
