In 1955, Baltimore-based R&B singer Sonny Til recruited D.C. vocalist Diz Russell and his outfit The Regals to become his backing group, aptly called The Orioles. For five years Russell and his colleagues harmonized and crooned behind Til in a doo-wop and early rock ’n’ roll sound. Frustrated with the band’s financial struggles, Russell left the band in 1960 and mostly stuck to his day job as an optician until 1977, when he reunited with Til for another version of The Orioles. After Til’s death in 1981, Russell took over leadership of the ensemble, renamed The Legendary Orioles. Now 81, Russell and the current version of The Legendary Orioles still blend their vocals suavely on the group’s signature ballads like “Cryin’ in the Chapel” and “It’s Too Soon to Know.” They’ll be joined on Capitol Hill by guest vocalist Ronald “Posie” Miles of D.C.’s The Rainbows, who had a regional hit in 1955 with “Mary Lee,” an upbeat doo-wop track. Decades after their prime, these skilled and soulful musicians will still be sure to charm. The Legendary Orioles perform with Ron “Posie” Miles at 5 p.m. at Mr. Henry’s, 601 Pennsylvania Ave. SE. $22–$25. (202) 546-8412. mrhenrysdc.com.