Grandparents Who Rock, a spin-off group from Parents Who Rock, will makes its debut Saturday, February 28, from 7 to 10 pm at the Diva Lounge, 369 Bloomfield Ave., Montclair, with a concert to benefit Little Kids Rock in Montclair. Featured performers include Jane Susswein, the Schuchinskis, Barbara Evans Hassenfeld, Jim Steiner, Meg Beattie-Patrick, Joan Streit, Rob Pignatello, Frank Cagliostro and Barbara McCarthy. There will also be an auction for great gifts from several local businesses including Casa Pilates, Gumdrop Hair Studio and Bistro 18. $10. Call 973-509-3000 for reservations. www.divalounge.com. All proceeds go towards Little Kids Rock, helping to put more music into the Montclair public schools.