Will Smith did a few Fresh Prince songs at Lady B concert

Will Smith was a surprise guest at WRNB DJ Lady B's 30th Anniversary concert Sunday night at the Dell Music Center.

The Fresh Prince performed "Summertime" and "Brand New Funk" and came back out to rhyme with Doug E. Fresh on "La Di Da Di."

Will Smith and Mayor Nutter backstage at the Lady B anniversary concert at the Dell Music Center Sunday night. (Photo: Luke Butler)

The show celebrated the pioneering Philly hip-hop DJ on 30 years in radio and featured performances by Public Enemy, Big Daddy Kane, Salt-N-Pepa, and Schoolly D.

Read more about Lady B in Elizabeth Wellington's story in Sunday's Inquirer.