Adele — Adele Taylor Swift — Taylor Swift Rihanna — Rihanna John Legend — John Legend Wiz Khalifa, Amber Rose — Wiz Khalifa, Amber Rose Fergie — Fergie Miranda Lambert — Miranda Lambert OK Go — OK Go Nicki Minaj — Nicki Minaj Jessie J — Jessie J Skrillex — Skrillex Maroon 5 — Maroon 5 Katy Perry — Katy Perry Foo Fighters — Foo Fighters LL Cool J — LL Cool J Blake Shelton — Blake Shelton Getty Images Carrie Underwood — Carrie Underwood Tony Bennett — Tony Bennett Bruno Mars — Bruno Mars Kings of Leon — Kings of Leon Ledisi — Ledisi Esperanza Spalding — Esperanza Spalding Kathy Griffin — Kathy Griffin The Civil Wars — The Civil Wars Alicia Keys, Swizz Beatz — Alicia Keys, Swizz Beatz Foster the People — Foster the People David Guetta — David Guetta Rebecca Black — Rebecca Black Thompson Square — Thompson Square Alison Krauss and the Union Station — Alison Krauss and the Union Station Nicole "Snooki" Polizzi — Nicole "Snooki" Polizzi The Band Perry — The Band Perry Mumford & Sons — Mumford & Sons Getty Images Prev Next
