If Barton felt any sort of smuggness, well he didn't say anything regarding the turn around on Cassie's part. He just smiled and took another sip of his drink. This was what it was all about after all. He remembered his first concert. Full of marijuana and grunge music. Yikes.
As the show started, he watched the mutant singer step out into the stage and just enthrall the crowd. In particular, Clint tried to pay close attention to the light show. He'd heard it was really from her powers. Just wow! She could be put on a show. "Not too shabby for speacil effects, eh. I wonder if she's single?"