Background: Bad Brains is an American hardcore punk band formed in Washington, D.C., in 1977. They are widely regarded as among the pioneers of hardcore punk, though the band's members have objected to this term to describe their music. They are also an adept reggae band, while later recordings featured elements of other genres like funk, heavy metal, hip hop and soul. Bad Brains are followers of the Rastafari movement.
Context: The band was first founded in 1976 as a jazz fusion ensemble called Mind Power in the mold of bands such as Chick Corea's Return to Forever and John McLaughlin's Mahavishnu Orchestra as well as R&B musician Stevie Wonder. In 1977, their friend Sid McCray introduced the band, who were already interested in bands such as Black Sabbath, to punk rock, including the Dickies, the Dead Boys, and the Sex Pistols. Mind Power became obsessed with punk rock and changed their name to "Bad Brains", after the Ramones song "Bad Brain", but with the word "bad" in the sense of "good". Despite their burgeoning punk sound, the early Bad Brains, after seeing Bob Marley in concert, also delved deep into reggae music and the Rastafari movement. Sid McCray became their first singer but left in the early days of the group's hardcore punk era, and guitarist H.R. became the band's new singer.  The band developed an early reputation in Washington D.C., due in part to the relative novelty of an entirely black band playing punk rock at the time, but also due to their high-energy performances and undeniable talent.  In 1979, Bad Brains found themselves the subject of an unofficial ban among Washington D.C. area clubs and performance venues (later addressed in their song, "Banned in D.C."). The band subsequently relocated to New York City, where they would serve as a catalyst for that city's burgeoning hardcore scene. At first, the Brains stayed with their NYC friends in the bands The Mad and The Stimulators.  Their self-titled debut album was released on Neil Cooper's ROIR on "cassette only" on February 5, 1982, followed in 1983 by Rock for Light, produced by Ric Ocasek of The Cars.
Question: When did the band transition to hardcore?. Whats the answer?
In 1979, Bad Brains found themselves the subject of an unofficial ban among