Why?

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