At Keys on Main, dueling pianists take audience requests. (Courtesy of Keys on Main)

At Keys on Main, bartenders mix up drinks with musically inspired names, like Lady Gaga. (Courtesy of Keys on Main)

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Live music policy alert! Keys on Main, a dueling piano bar with locations in Seattle, Tacoma and Salt Lake City, is scheduled to open Friday, March 9 at The Triangle in Costa Mesa.

Set on the first floor of the complex in an 8,500 square-foot space that used to be the Gap, the 21-and-older night spot will offer a full bar and American food and will begin by opening Thursday- Saturday nights.

Here’s how the entertainment works: Two keyboard players will take requests from the audience and play tunes in front of a “video wall.” Practically human juke boxes, they’ll pump out all kinds of hits: classic rock, pop, alt and oldies.

“Keys on Main is a modern piano bar, providing a high energy, rock concert type of experience for the audience,” said owner George Hasenohrl. “The lights, video and music combine for the feel of a live concert, not just an old school lounge act.”

While the music plays, customers can munch shareable plates like nachos, flatbreads and wings. Of course there will be craft beer and a wine list. Signature drinks take on musically inspired names. The Lady Gaga (Bacardi Dragon Berry rum, Bacardi Coconut rum, pineapple juice and cranberry in a sugar-rimmed martini glass) sounds pretty tasty but too many might give you as big a headache as some of her lamer tunes.

All seating must be reserved in advance. Cover is $5 on Thursdays and $10 on Fridays and Saturdays. Music starts at 9 p.m. but guests must arrive by 8:30 p.m. Premium seats closer to the stage are an extra $10 per person.

VIP packages with reserved lounge seating and bottle service starts at $300, no time restrictions apply. Pricey, yeah, but can you think of a better place to embarrass your best friend with a rousing round of “Happy Birthday”?

Reservations can be made online: keysonmain.com