The "California sound" refers to a distinct style of music that emerged in the 1960s and 1970s, characterized by its harmonious melodies, lush instrumentation, and often laid-back vibe. This sound is closely associated with genres like surf rock, pop, and psychedelic rock, featuring artists such as The Beach Boys and The Mamas & the Papas. This musical style often reflects themes of youth, freedom, and the California lifestyle, incorporating elements of folk and rock. The California sound has influenced many artists and genres over the years, contributing to the broader landscape of American music.