Complex sentence: The group formed in San Diego, California during the Spring months of 1997, playing their first gig as Tristeza (Christopher Sprague-guitar, James LaValle-guitar, Luis Hermosillo-bass, and James Lehner-drums) in September of that year.
Split into simpler sentences: The group formed in San Diego, California during the Spring months of 1997, playing their first gig as Tristeza. The lineup included Christopher Sprague-guitar, James LaValle-guitar, Luis Hermosillo-bass, and James Lehner-drums in September of that year.