John Mayer Premieres New Song For Good Cause

How nice!

John Mayer was on hand at the Blythedale Children's Hospital in New York yesterday, performing as part of a benefit concert for the kiddies.

He even premiered a brand new song called the Age of Worry, which you can hear in the video (above)!

Kind of a somber tune for the occasion, but we're happy to see him lending his voice to a good cause!