Crying Guitar by The Movers 

A nice organ-heavy instrumental by The Movers, an outfit that formed in Alexandra in 1967, but later moved to Soweto. Apparently their original lineup consisted of twelve members, and the lineup changed quite a bit over time - to such an extent that by the end of the 1980s none of the original members were left.
Discogs shows that they released a large number of singles and albums from the late 1960s through to the early 1980s. Crying Guitar was one of their earliest singles, and featured on their first album, a fully instrumental recording with the same name. According to one internet source the album sold a massive 500,000 copies.
CYB 73.
B side is Beat Corner.