Aaron "Big Voice Jack" Lerole (c. 1940 – 12 March 2003) was a South African singer and penny whistle player.
Lerole grew up in the Alexandra township near Johannesburg, and in his early teens play penny whistle on the street with his brother Elias.
David Ramosa and Zeph Nkabinde started playing with them, and to defend themselves from street gang attacks they carried tomahawks.
He continued to record, however, and produced such hits as "Cherry Beat", "Big Voice Jack", "Tully La Fluter" and "Bongo Twang Jive".
Brad Holmes, owner of the Bassline club, became their manager, and in 1997 introduced them to South African-born rock star Dave Matthews when he toured the country with his band.
Later that year, director Johnathan Dorfman released his documentary Back to Alexandra, which chronicles Lerole's US tour with Dave Matthews Band, and his return to South Africa.