We had a keys guy back in my rock band days who insisted on playing the lower register on a couple of songs where he played synth lead. Can you imagine what lower register sine wave synth lead did to the FOH mix and bass?
We had a REALLY good bass player back then.. I played lead guitar.
Sound guy took him out of the FOH mix, but left him in his monitor mix. He came up to us during the break, saying a friend told him that he couldn't hear keys out front. Sound guy explained the situation.
He got really upset, claiming he'd never been taken out of the mix and was highly offended. I told him we had discussed this specific issue numerous times up to this point, and it wasn't getting thru to him. Removing him from the mix was what FOH did to make us sound as good as we could. I told him... "Drop the left hand (or move it up an octave) and you'll go back into the mix". There was no change. That was Sat night. At Tues pm rehearsal.. I fired him. He was going to quit anyway, because he was offended.
lol what a ding dong that keys player was