Rick Ross, Usher and Keyshia Cole were some of the acts who hit the stage yesterday for Power 99's Powerhouse Concert in Philly.  See performance videos and pics inside.....

Last night, some of the top acts in R&B and Hip Hop took the stage at the Wells Fargo Center in Philly for the 2012 Power 99 Powerhouse Concert.  2 Chainz hit the stage to do a few of his hits like "Birthday Song."

“Keyshia & Daniel: Family First" star Keyshia Cole hit the stage in a fur coat and Louboutins.

"The King Of The South," T.I. was one of the top draws of the evening.

He brought Meek Mill (a Philly native) out on stage.

Chapter V crooner Trey Songz walked the red carpet and hit the stage.

Miguel performed a few tracks from Kaleidoscope Dream.

Wale was there.

Finally Famous rapper Big Sean layered up for his set.

And superstar Usher also hit the stage.  He and Rick Ross also performed together.

Performance clips:

Photos via Ajon Brodie" and Splash