What is a MC?

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