boooooed of the field

i heard in the game against the eskies the halftiem show got booed off the field, what did they do to get booed off

They had a guy in a renegade costume sing Sweet Caroline at half time for the first three games including preseason. It wouldnt be bad but he was obviously just some kareoke singer and he wasnt even in tune. It sounded awfull. So we booed him and booed him and booed him. It got to the point where it was fun to boo him. So the team pulled him.