Simplify the following text for a Grade 6 native English-speaking person.
Original: Ska ( , Jamaican ) is a music genre that originated in Jamaica in the late 1950s , and was the precursor to rocksteady and reggae .
Simplified: Ska is a kind of popular music from Jamaica that was developed in the 1950s . Ska music played at a slower tempo turned into reggae in the late 1960s .