The Australian singer uploaded to YouTube a video of him performing the classic, adding his beachy vibes to the reggae tune, reported Ace Showbiz.
The 18-year-old heartthrob showcases his vocals while playing his acoustic guitar as he takes viewers to some of his favourite places around the town, including a recording studio,a hill and an open field.
Simpson shared his cover of Marley's hit while he was working hard on his new EP "Free" with writer/producer Cisco Adler.
Having been preceded by "Flower" and "New Problem", the project is scheduled to come out on April 7.