Seth Pettersen was born and raised in Ventura County California. He started writing songs at the age of 14. As a live performer, Seth has toured North America, Central America and parts of Europe. Seth has shared the stage with the likes of Feist, Kings of Convenience, Violent Femmes, Donavon Frankenreiter, Little Wings, and Frank Black to name a few.

Seth is always changing the format of his live shows, from completely solo (accompanied by loopers and effects) to a full blistering rock set with his backing band known as "the Undertow". Each show is a unique experience.

As of 2012 Seth is currently recording a new full length record with Joel Jerome (Dios, Babies on Acid). A tentative release date has been set for late spring.

The reviews of Seth's last record 'Skate Away EP' have been favorable:

This is bottled sunshine. It’s surf, sand and skateparks. And it’s familiar territory for this Southern California songwriter. With a short, sweet EP Seth Pettersen reaches beyond pop sentimentality and surf guitars to plumb the deeper waters offshore. But even in the deepest waters, this lifelong surfer knows that sometimes a sandbar pops up and you can put down your feet. Survey the scene. Behind the sundown glow and the salty hair, Pettersen sees something somber and reflective. At first he’s ready to run from the hurt. “I think I know what to do/to take away my safety blues,” he sings in “Biscuits (Disarm Everything). Skate, surf, run – for the first half of this short EP it’s flight over fight. But toward the end of the record Pettersen faces up those fears and the songs take on new life. “Mother is a Moth” is a beautiful dirge. “Once in a While” is a hula funeral fueled by the slide guitar work of Neal Casal (guitarist for Ryan Adams’ now defunct band The Cardinals). “Is it better to turn than to face your fear?” In answering that question, Pettersen swims away from shore only to return again riding the tide.
-Jay Cullis

"Skate Away" is the perfect summer anthem, offering all the fun, lightheartedness of The Beach Boys, while at the same time adding a Ramones-esque punk rock flare. I dare you to listen to it without tapping your feet and bobbing your head.
-Examnier.com