Vitamin String Quartet (VSQ) is a musical group from Los Angeles, California that is widely known for its series of tribute albums to rock and pop acts. Their discography of a staggering 261 albums primarily features just a string quartet, though other instruments have been used. Their albums honor a wide variety of genres, including pop and rock, techno, country, and rap, and a wide variety of groups, such as System of a Down, Bruce Springsteen, Led Zeppelin, Deftones, Coldplay, Adele, Lady Gaga, Radiohead, Red Hot Chili Peppers, Green Day, Paramore, Muse, Linkin Park, Avenged Sevenfold and many more.