Totten attended Berklee College of Music, eventually earning a Bachelor's of Music degree. Later he was a Broadway and session guitarist. In the 90's Scott played on albums and sessions by Grandmaster Flash, Angela Bofill, Sybill. Donna Summer and Expose. He also played on Broadway shows and tours such as THE WHO'S TOMMY, LES MISERABLES, RENT and MAMMA MIA.
Totten began playing with the Beach Boys touring band on guitar in 2000. He moved to the position of Musical Director in 2008. Scott's vocal solos for the concerts include, "Ballad of Ole' Betsy", "The Warmth Of The Sun", "Let Him Run Wild'", while he shares the lead on "Wouldn't It Be Nice," "Why Do Fools Fall In Love," and "Sloop John B,"
In 2011, Totten was confirmed to be performing alongside The Beach Boys on their 50th Anniversary Reunion Tour as Music Director, singer, guitar, ukulele and bass. Totten also plays on the band's subsequent studio album, That's Why God Made the Radio (2012). Scott also played lead guitar on GOIN' TO THE BEACH from the MADE IN CALIFORNIA box set, and added vocals to the new single version of ISN'T IT TIME from the same album.