John Coltrane was a renowned American jazz saxophonist, composer, and bandleader. He is considered one of the most influential musicians of the 20th century and was at the forefront of the free jazz movement. Coltrane's career spanned from the 1940s to the 1960s and he released over 50 albums during his lifetime. He is best known for his work on the album A Love Supreme, which is widely regarded as one of the greatest jazz albums of all time.