I've basically played with two kinds of groups: those that were borderline reverential of bass players because it took them forever to get a reliable one as they limped along scrambling to cover the low end or using hired guns (we'll call these "good," bands), or bands who considered the bass role to be largely ceremonial; I mean, it's not like you're a singer or a guitar player. Anybody can play root notes right? And that is clearly all you add (we'll call these "bad," bands). IME, in the latter type of band, you will inevitably be asked to cover something stupid. Fifteen years ago, when I was regularly gigging, claves were the flavor of the week, but I just recently watched a talented, but clearly long suffering, bass player cover a ukulele part at an outdoor gig. So long as the check clears, with enough zeros on it, I'll morris dance for all I care. So my question is: what was the most eyeroll inducing doubling you've ever had hoisted upon you, or conversely what song do you cover something fun on? For me, Eyeroll: gotta be melodica. As Chris Hardwick put it, "the finest of the plastic reeded instruments." Good times: At a lot of weddings I'll do one tune on the bagpipes, if requested. That one is sort of cheating though, since it's not like my band forced me into picking them up. If we are talking things I didn't want to play, I had good times playing a bodhran in a band that played two Irish tunes where a bass wasn't appropriate.