This Is Why

All The Things She Said t.A.T.u. The Sweet Escape Gwen Stefani, Akon Locked out of Heaven Bruno Mars Judas Lady Gaga Love You Like A Love Song Selena Gomez & The Scene Espresso Sabrina Carpenter Lush Life Zara Larsson Paparazzi Lady Gaga Pink Pony Club Chappell Roan Telephone - Cover of Lady Gaga feat Beyoncé Glee Cast Last Friday Night (T.G.I.F.) Katy Perry Oops!...I Did It Again Britney Spears no tears left to cry Ariana Grande The One That Got Away Katy Perry Maneater Nelly Furtado Sign of the Times Harry Styles Style Taylor Swift Teenage Dream Katy Perry thank u, next Ariana Grande Toxic Britney Spears All The Things She Said t.A.T.u. The Sweet Escape Gwen Stefani, Akon Locked out of Heaven Bruno Mars Judas Lady Gaga Love You Like A Love Song Selena Gomez & The Scene Espresso Sabrina Carpenter Lush Life Zara Larsson Paparazzi Lady Gaga Pink Pony Club Chappell Roan Telephone - Cover of Lady Gaga feat Beyoncé Glee Cast Last Friday Night (T.G.I.F.) Katy Perry Oops!...I Did It Again Britney Spears no tears left to cry Ariana Grande The One That Got Away Katy Perry Maneater Nelly Furtado Sign of the Times Harry Styles Style Taylor Swift Teenage Dream Katy Perry thank u, next Ariana Grande Toxic Britney Spears