While many were simply wondering "Esperanza who?" when the jazz singer won the Best New Artist award at last night's Grammys, Justin Bieber fans were nothing short of outraged. And they took to their favorite Internet megaphone to vent their Bieber frustration.

Bieber nation blew up Twitter as soon as Esperanza Spalding's name was announced instead of the Biebs' (or even, gasp, Drake), running the gamut of emotions (in 140 characters or less, of course) from anger and sadness to downright cattiness at the unsuspecting Spalding. Others took it a step further, attacking Spalding's Wikipedia page and teaching her that Bieber Fever has many of the same symptoms as Sore Loser.