Mind-blowing musicianship in this clip, allow me to break it down: Anderson gives a countoff and the chaotic intro ensues, then in bar 7 Anderson gives a triplet in a distinctly slower tempo which the keyboard player picks up perfectly – you see his head bop as he pulls the tempo back, lazily arpeggiating as Anderson says "ooh!" and smiles, he digs it. Anderson is absolutely the front man but he's always listening to his guys, playing off them (must be a blast being in his group). Then Anderson cues the band with "Alright, check it out" – he let the vamp simmer a little longer than he did on the album version, had to let it get cooking properly. By the time he gets to "Your Heart Don't Stand a Chance" they're locked in, slower than the album version but it's a different environment with fewer instruments in a cramped space which affects how a band plays. That's the beauty of live music, you never know what's gonna happen even if you're in the band, hence Anderson saying "Let's see how we're gonna do this" at the top, even he's not sure. There's a good reason this video has 122M views (I think about 10M of them are me).