Sean Williams was born in Macon, GA. At a young age, he was exposed to the likes of The Beatles, Simon and Garfunkel, Fleetwood Mac, and The Beach Boys. Williams' music is heavily inspired by Brian Wilson and The Beach Boys. He eventually got to record with members of The Beach Boys in various capacities.

Prior to becoming a solo artist, he performed in festivals alongside The Revivalists and Susto. After leaving his band Dalmatian in 2015, he began his solo career under the name Sean Solo. Williams released his first album Songs of Life and Death in 2016. He collaborated with Grammy award winning engineer Greg Calbi on his second album Depth Perception. The album was released on June 2, 2017. Endless Summer Quarterly described the album as having "youthful energy" and "nuanced pop sensibilities."

In 2020, he engineered an album for blues legend E.G. Kight. The album The Trio Sessions released on May 11, 2021.

On May 28, 2021, he released his third LP Morning Stars and Angels Sing. The album marked a musical departure from his previous albums to a more folk-oriented sound. Pop Garden Radio stated that it was "a strong mix of indie pop, americana, folk and alt-country" and "by far the strongest effort from Sean Solo to date."