I was hired to replace a bass player in a blues rock band. Never played with them before or even heard them play. I was "warned" by the singer that the drummer was "busy", so I walked into practice expecting a Keith Moon, sort of flailing. We cranked off a funk version of "I'm A Ram" and, instantly, the drummer and I clicked - solid groove, solid time. Yeah he was "busy" - Like Garibaldi is "busy". Funky spelled "Phonky". We were throwing fills and kicks, like we had one brain playing two instruments.. After the song was over, we just looked at each other and grinned. And the rest of practice was like that - we kept throwing kicks and fills, just to see how far out we could get without losing each other, and we stayed locked and together, even though we never played together and never heard each other play. It was like, we just knew where the music was going. We discovered we could accent the guitar player's solos without any preparation - the "White on ice". The guitar player pulled his head up out of his solo and grinned back at us - he could see he now had a driving rhythm section that would make him sound great and he could stretch out a far as he wanted to.. . After practice, the singer took me aside and asked "are you OK playing with this guy? I mean, he plays way too much." I replied, "we're going to get along just fine."