What's the worst trainwreck your band has ever had during a gig caused by you? I play in church, a contemporary service and it is moderately upbeat, every now and then we'll throw in a good jazz song with some nice bass lines & licks. One such song starts out slow & melow until after the secont chourus, then it jumps in double time, and changes keys, All this while the singers do this cool oooh aaah thing, and me, the bassist is supposed to do a really slick lead there to change the key. Well not only did I do the change too early, during the most sentimental part of the song, I did the whole lead on the wrong string, my thumb anchor had moved and I didn't know it. Basically the whole band is doing this sweet melodic tune and seemingly out of nowhere I jump in to an off key psychotic bass riff. Basicaly the whole band turned and looked at me with jaws dropped. I knew the song like the back of my hand, just had a major brain fart. My brother, the lead singer, apologized to the audience for the schitzofrenic bass player, with a laugh, and we continued the song. By then I was so shook up that when we came back to that part I completely fumbled the whole thing. Again!!!