With Nathan Sykes' "More Than You'll Ever Know" retired to the Pop Clash Hall of Fame, it's time for a new matchup! This week, Fifth Harmony's "Worth It" is up against Rihanna's "American Oxygen." Which song should win the Pop Clash?

Fifth Harmony know their self-worth and they aren't afraid to let the world know it. The group radiates self-confidence in their new track "Worth It." "Uh huh, show me what you got, cus I don't wanna waste my time / Uh huh, you see me in the spot like oooh I love your style / Uh huh, show me what you got now come and make it worth my while," Fifth Harmony belt in their latest empowering track. We're obsessed.

Rihanna takes a decidedly different approach in "American Oxygen," tackling the proverbial American Dream in the anthemic track. "We sweat for a nickel and a dime / Turn it into an empire / Breathe in, this feeling / American, American oxygen," she sings. She's never one to shy away from making a statement and we hear this one loud and clear. It's definitely Rihanna's most political song to date, but as with all of her music, it's extremely relevant.

Which song should win the Pop Clash? You can vote for Fifth Harmony's "Worth It" or Rihanna's "American Oxygen" once an hour until the polls close at 3PM ET on April 27.

Watch Fifth Harmony's "Worth It" Feat. Kid Ink

Watch Rihanna's "American Oxygen"