John Cipollina (1943-2018) was an influential American guitarist best known for his work in the psychedelic rock genre. He gained prominence as a founding member of the band Quicksilver Messenger Service, which emerged in the San Francisco music scene in the mid-1960s. Cipollina's distinctive guitar style, characterized by a fluid, expressive tone and innovative use of effects, helped define the sound of the era. Notable works include Quicksilver's self-titled debut album (1968), which features the iconic track "Fresh Air," and their follow-up, "Happy Trails" (1969), known for its extended improvisational jams. Cipollina also collaborated with various artists throughout his career, including the bands Copperhead and the John Cipollina Band, and contributed to albums by musicians like Jerry Garcia and Robert Hunter. Cipollina’s impact on music extends beyond his recordings; he is revered for his live performances, which often showcased his improvisational skills. His innovative approach to guitar playing has influenced a generation of musicians in genres ranging from rock to jam bands, solidifying his legacy as a key figure in the evolution of American rock music.