24. Song: ''To Love You More''
Episode 88: ''All or Nothing,'' May 6, 2013
Take away the choir room, elaborate choreography, silly costumes, and all the rest of Glee's hallmarks, and with what are we left? Lea Michele's powerful voice. The actress has performed many ballads over the years, but this fourth season finale number is one of her best. For a Broadway callback Rachel belts the Celine Dion classic, and the result is chilling and inspiring. No wonder she landed the role.