Daniel Dale Johnston was an American singer-songwriter and visual artist regarded as a significant figure in outsider, lo-fi, and alternative music scenes. Most of his work consisted of cassettes recorded alone in his home, and his music was frequently cited for its 'pure' and 'childlike' qualities.
Frank Vincent Zappa was an American singer-songwriter, activist and film-maker. His work is characterized by nonconformity, free-form improvisation, sound experiments, musical virtuosity, and satire of American culture. In a career spanning more than 30 years, Zappa composed rock, pop, jazz, jazz fusion, orchestral and musique concrète works, and produced almost all of the 60-plus albums that he released with his band the Mothers of Invention and as a solo artist. Zappa also directed feature-length films and music videos, and designed album covers. He is considered one of the most innovative and stylistically diverse musicians of his era.