What was Mitchel Musso singing in Hannah Montana?

Mitchel Musso, who played Oliver Oken in Hannah Montana, didn't actually sing in the show. He was a talented musician in real life, but the character of Oliver was not written to be a singer.

The show focused on Miley Cyrus (Hannah Montana) as the main singer and featured other songs performed by various characters, but Oliver was mainly known for his comedic timing and friendship with Miley.