Longman Dictionary of Contemporary English
n. (context music English) a subgenre of reggae that incorporates hip hop, rhythm and blues and sampling; dancehall
Raggamuffin music, usually abbreviated as ragga, is a subgenre of dancehall music and reggae, in which the instrumentation primarily consists of electronic music. Similar to hip hop, sampling often serves a prominent role in raggamuffin music.
In the mid-1980s, French Antilles Kassav, the first in the Caribbean to use MIDI technology, took Caribbean music to another level by recording in a digital format. Wayne Smith's " Under Mi Sleng Teng" was produced by King Jammy in 1985 on a Casio MT-40 synthesizer and is generally recognized as the seminal ragga song. "Sleng Teng" boosted Jammy's popularity immensely, and other producers quickly released their own versions of the riddim, accompanied by dozens of different vocalists.
Usage examples of "ragga".
For no reason I could discern, the Hendrix piped a slow, deep ragga beat in from the corners of the room, and a lighting effect patterned the ceiling above us with swirling blotches of red and purple.