by Evie Stone

UPDATE(9:50 EST): Obama CO state director Ray Rivera: 30k txt signups in last hour.

Seats are quickly filling with more than 2 hrs to go. ... will.i.am and John Legend did a live performance of their song that went viral "Yes We Can" ...complete with video samples of Obama speeches. The crowd waved little American flags. As the song wound down a staffer came out to encourage the audience to text the campaign to sign up and volunteer. A massive graphic display conveyed which area codes were sending in the most texts.