In the decade since his platinum-selling full-length debut, Jason Mraz has gone from breezy clean-cut pop rocker to shaggy-haired bohemian with a mellow alterna-pop rock sound, sincerity and warm lyricism intact all throughout but maturity reflected in tracks like "I Won't Give Up" off 2012 fourth LP,
Love Is a Four Letter Word, a love song about making it work ("Even if the skies get rough, I'm giving you all my love / I'm still looking up"). Piano rock songstress Christina Perri supports on his current “Tour Is a Four-Letter Word” run.
— Leilani Polk