We just came across this limited-time deal from a very Groupon-like coupon site called KGB Deals (no espionage involved, we’re pretty sure). The deal’s for two tickets to a crossover Brooklyn Philharmonic concert and Brooklyn Museum exhibit on Sunday, May 16. The event is called Music Off the Walls, and you’ll hear a Philharmonic chamber ensemble, pianist and electric guitarist play music composed in the last decade, about the art installation Extended Family, whose works are also from the last decade. $14 (regularly $30) will get you and a guest museum admission, along with tickets to a 1 p.m. guided tour of the exhibit and to the 2 p.m. concert. The deal on KGB ends Friday, May 7 at midnight, or until the 88 remaining coupons are gone. Buy the coupon here.