The 27-year-old actor, who has been working with some top names in the music industry, is said to have made it his number one priority, reported Showbiz spy.
"He's heavily invested in his music career and it will only be a matter of time that he has a number one hit on his hands.
"He's that talented and that passionate about making this happen. Rob is a very humble, deep, thoughtful person and music is his way of expressing his authentic self," a source said.