Abe does a great job driving the beat, but Rusty is the key---what an awesome player. As soon as I heard him nail that solo on I'm Down at the Concert for NYC, I hoped that macca would tour. Then when the album came out I became an even bigger fan. Saw the Cleveland show and Rusty was phenominal and played with great spirit and youthful energy. I definately see why Paul is having so much fun playing with this band.