FRIDAY:
>> Please Hammer, don’t hurt ’em. Landmark R&B radio station WPGC celebrates 19 years of playing 18 jams in a row with a concert at the Verizon Center that features LL Cool J, MC Hammer, Chuck Brown, EU, Naughty By Nature, Bow Wow, MC Hammer and Lisa Lisa. Apparently Cult Jam had previous commitments. $45 – $70, 7 p.m. (Kyle Gustafson)

>> You may have missed La Didone last weekend, but if you still want to take a chance on hearing a Baroque opera, you can hear Telemann’s Orpheus (Hamburg, 1726) tonight, presented by the Wolf Trap Opera Company at the Barns at Wolf Trap. I heard it last weekend: the singing is fine, in some cases extraordinary, and the production is generally pleasing. 8 p.m., $58. Also on Sunday at 2 p.m. (Charles Downey)

SATURDAY:
>> I have no idea what Kenin’s “A Tribute to Radiohead’s OK Computer” will hold, but just hope it’s as awesome as Rodeohead. Evan Bliss of The Low Life opens at IOTA, 9:30 p.m. $13. (Kyle Gustafson)

>> The road to Travistan is paved with good intentions and apparent controversy. See the evolution of the ex-Dismemberment Plan, ex-solo, Travis Morrison Hellfighters Saturday at the Black Cat, with Cataract Camp and Madman Films. $10, 9:30 p.m. (Jacques Ntonme)

>> The DC International Wine and Food Festival boasts offerings from more than 280 wineries — and more than 1,200 different wines for you to sample. Best of all, the celebrity chefs include Queer Eye’s Ted Allen and “Easy Entertaining’s” Michael Chiarello, meaning you don’t have to move around covertly, worried that Rachael Ray will pop out from behind a booth, eat your brains and call it “yummo!”. Saturday and Sunday, 1 p.m. – 5 p.m. Single Day tickets are $71, Two-Day Passes cost $92. (Missy Frederick)