I recently sat in with a friend of mine's band. When I got there they had just started the 2nd set so I listened to them, and of course paying close attention to what the bass player was doing. His sound wasn't my to my taste but he was in the pocket and playing very well. After the set I went up and talked to them and was asked if I wanted to sit in, and I do. Not really knowing their material we played some classic standards that a couple of them I hadn't played in 20 years or more. We switch places and he takes over again. His playing went from holding down the bottom to walks and runs that were not totally out of place but wasn't doing anything as far as complementing the rest of the band, especially when he was about 5 times louder than he needed to be. Needless to say, I was not impressed with his ability to overplay.