South African band, Four Jacks and A Jill had an international hit with "Master Jack", in 1968 which reached number eight in the USA and number one in Canada, Malaysia, New Zealand and Australia. The song was even covered by Rita Chao! Here is the B Side to that hit single.
A really super band fansite, with lots of pictures here. Four Jacks and A Jill discography, and album sleeve art here. An interesting article on the band, here. History of South African pop music, here.