The High School Musical hunk bonded with Swift after they both loaned their voices to new animated movie The Lorax, and the Love Story hitmaker was more than happy to pass on her best musical tips.

Efron tells the Los Angeles Times, "She's a great teacher. In the past, everyone who has tried to teach me guitar starts with music theory and stuff like that.

"I tend to just doze off after a little while. She went straight into songs. She taught me, like, four chords, and I'm already playing all the good campfire songs."

Efron showed off his skills by playing guitar and singing with his mentor Swift during a taping of The Ellen DeGeneres Show, which airs in the U.S. on Tuesday (21Feb12).