Kudrow sings Smelly Cat with Swift on stage at Staples Center, Los Angeles.
This singer has only ever played in coffee houses before. She never played in a big venue like this. Please make her feel welcome. You guys, her name is Phoebe Buffay.
At one point, Kudrow stops the performance to give Swift advice:
You have to really feel the lyrics, you know
— STAPLES Center (@STAPLESCenter) August 27, 2015