Conversation so far:
What was the health issues?
Bad Brains frontman H.R.
was diagnosed with a rare type of headache called SUNCT.
Was there anything to cure it?
CANNOTANSWER.
Are there any other interesting aspects about this article?
June 8, the band played an unannounced short gig in Darryl Jenifer's art exhibition.

Question: What did they do in 2015?
Self-contained rewrite: What did Bad Brains do in 2015?