The Del Sol Quartet specializes in contemporary music and has commissioned hundreds of works from a diverse group of composers in the U.S. and beyond. The group sometimes performs music calling for just intonation. The group released its debut album, Tear, on its own label in 2002; the album contained a wide range of contemporary music which has characterized the quartet's music-making ever since. The Del Sol Quartet has commissioned new works from a wide range of composers in the U.S. and other countries, including Frederic Rzewski, Chinary Ung, and Terry Riley, whose Dark Queen Mantra the quartet premiered in 2017 with guitarist Gyan Riley. Educational outreach in the San Francisco Bay Area forms a major aspect of the group's activities. In 2021, the Del Sol Quartet was heard on the album Huang Ro's A Dust in Time.