So my jazz/funk band arrived to a place which hosted a band festival, and promised us a bass amp and a PA. The band before us was already on, and the bass amp sounded fine. I thought thats what the backline was, so we proceeded to go outside to hand out flyers to promote our show (that doesn't work in NYC as we learned). When we came back, I was horrified to watch the bass amp packed away, and the only thing left was an amp not much bigger than a 10" TV, and when cranked, barely cut through the audience talking. I spoke to the "sound guy", who told me to plug into the PA instead, mixer resembling a learning toy from Kids R Us. The show started - the monitors must have been like 25W at most and were really weak, so I kept turning up more and more, playing as loud as I can, barely hearing myself with the rest of the band drowning me out. The PA speakers were almost distorting - still not loud enough. And we're a jazz band... Then the sound guy gets really drunk and decides to sing with us, so we play a blues. Somewhere in the middle I realize I have no sound. I walk over to the PA, and its on - so I might have killed the monitors. I calmly walk over to the pianist, and ask him to play the bassline. Meanwhile Im just standing like a fool. When the song ended, we packed up SWIFTLY.