Galt MacDermot (1928-2018) was a Canadian composer and musician renowned for his contributions to the musical theater genre. He is best known for his work on the groundbreaking rock musical "Hair," which debuted in 1967 and became a cultural phenomenon, reflecting the counterculture of the 1960s. The score of "Hair," featuring iconic songs like "Let the Sunshine In" and "Aquarius," showcased MacDermot's fusion of jazz, rock, and funk, significantly influencing the sound of Broadway musicals. In addition to "Hair," MacDermot composed music for other theatrical productions, including "Two Gentlemen of Verona," which won the Tony Award for Best Musical in 1971. His innovative use of rhythm and melody helped to redefine musical theater, making it more accessible to younger audiences. MacDermot's impact extends beyond theater; his music has been sampled by numerous hip-hop artists, further highlighting his influence on contemporary music. His unique style and ability to blend genres have left a lasting legacy, earning him a place as a significant figure in 20th-century music history.