Brandy (like Mariah, Celine, and Xtina) doesn't sell mostly because she abandoned the formula that had made her a star (which Adele recreated successfully): the sad song. B-Rocka's Everything I Do cover, Mimi's Without You cover, Celine's All By Myself cover (... hmm, a pattern), and Xtina's Beautiful are classics for the pathos. Everybody goes back to moving songs after club bangers to even out their moods and emotions. Veteran artists should capitalize on this very human loophole.