Toots Thielemans, born Jean-Baptiste Frédéric Isidor Thielemans, was a Belgian jazz virtuoso renowned for his mastery of the chromatic harmonica, guitar, and whistling. Often hailed as the preeminent jazz harmonica player, Thielemans elevated the humble harmonica to a legitimate voice in jazz, leaving an indelible mark on the genre. His career spanned decades, during which he composed and performed a diverse range of music, including Brazilian jazz, bossa nova, and Latin jazz. Thielemans' unique blend of instruments and his distinctive sound made him a beloved figure in the jazz world, collaborating with numerous renowned musicians and contributing to countless iconic tracks.