Rocker Jon Bon Jovi performed a private gig for U.S. sports agent Casey Wasserman as a special birthday surprise on Saturday (28Jun14).

The Livin' on a Prayer hitmaker attended Wasserman's 40th birthday bash in Beverly Hills, California and performed several songs as a gift to his pal, according to New York Post gossip column Page Six.

Other guests at the party included music moguls Irving Azoff and Michael Rapino, actress Lori Loughlin, and film producer Jeffrey Katzenberg.