The music has regular chops on the back beat (off-beat). These are called “skank”, and are played by a rhythm guitarist. The bass drum hits on the second and fourth beat of each measure (each bar). These are called the “drop”. Reggae bands also use a bass, a keyboard or organ, and horns.
Reggae was started in 1960 but became famous in the 1970s.
Reggae songs often have lots of backing singers.