It’s no surprise that Adrian Grenier would surround himself with beautiful and barely legal girls from the beaches of California. According to a report from EW, the actor will take a break from playing Vincent Chase on HBO’s “Entourage” to do a guest spot for The CW’s teen drama “90210.” And surprisingly, he’ll be there as a musical guest with his band, The Honey Brothers not as an actor.

It’s almost mandatory that every actor have a side profession as a musician and Grenier is no different. Apparently, he’s a gifted drummer and he and his real life “folk band” will pop up on the September 27th episode of “90210.” The group will be on hand to perform during Naomi’s (Annalynne McCord’s) over the top 18th birthday party. And just because they can’t let a good cameo go, Naomi will throw a flirtatious quip in Grenier’s direction.

Now that you know when and where his cameo will take place, keep your eye out for the curly haired guy behind the drum kit. But you probably won’t have to look that hard because the network will make it their business to let you know that someone from HBO is on their channel.

The new season of “90210″ begins on September 13th on The CW.

Will you tune in to see Grenier on the show? Are you interested in watching his band’s performance?