Eddie Vedder may be best known as frontman of Pearl Jam, but he is also a committed fan of baseball team the Chicago Cubs.

So much so, in fact, that the rock star has appeared in an ad for the team's upcoming season.

Vedder appears as a 'jingle-writer' for the fictional Bryzzo Souvenir Company, a long-running in-joke relating to the team and two of their players, Kris Bryant and Anthony Rizzo.

Watch the ad and a behind-the-scenes look at the shoot below: