Last night, R & B foursome En Vogue celebrated the 20th anniversary of their formation with a show at B.B. King’s in New York. Above is a clip of them performing the monster ballad “Don’t Let Go,” which was the group’s final single to feature prodigal daughter Dawn Robinson (she returned to the fold last year), last night; somehow, it manages to be a pure display of pipes and a mass singalong at the same time. Nice trick, that. (And wholly unsurprising, as midway through my first spin of this clip I started singing along with the song, although not loudly enough to disturb the cat napping about 10 feet away from me.) [YouTube]