I've only auditioned once for band, I made sure I knew the songs they wanted me to play and put myself across as a likeable, dependable guy. Turned out I knew the songs better than the outgoing bassist so all was good and I was in.
I'm still in that band today, what do I bring to the table now ...
Well I seem to be the only one who understands how to use a damn PA/Mixer and what the flip EQ is for.
I usually have to lend someone a spare cable, battery, tuner, even a flipping guitar once at rehearsal because someone forgot to bring or has a broken one.