Over 20 years ago, Avril Lavigne’s emotional ballad from Let Go captured hearts and still resonates with fans today.

On this very day in 1973, pop-rock duo Hall & Oates dropped the album Abandoned Luncheonette. This pop-rock soul record boasted quite a few excellent songs. However, one specific song ended up becoming popular with fans and Hall & Oates’ contemporaries alike: the Philadelphia soul gem,

Genre seems to be less important these days, so let's take a look at some pop singers who've released rock albums. Experimenting with a new sound and aesthetic isn't a new concept — musicians have been toying with different styles for decades.