Callen Radcliffe Tjader, Jr. (/ˈtʃeɪ.dər/ CHAY-der; July 16, 1925 – May 5, 1982), known as Cal Tjader, was an American Latin jazz musician, known as the most successful non-Latino Latin musician. He also explored various other jazz idioms but never abandoned the music of Cuba, the Caribbean, and Latin America, performing it until his death.
Tjader primarily played the vibraphone. He was accomplished on the drums, bongos, congas, timpani, and the piano. He worked with numerous musicians from several cultures. He is often linked to the development of Latin rock and acid jazz. Although fusing jazz with Latin music is often categorized as "Latin jazz" (or, earlier, "Afro-Cuban jazz"), Tjader's output swung freely between both styles. He won a Grammy in 1980 for his album La Onda Va Bien, capping off a career that spanned over forty years.