Muhammed Suiçmez composed a couple of records back in the early 2000's under the name Necrophagist. His albums are regarded as the best technical death metal of all time. Apparently, another record is just sitting somewhere in his home on a hard drive, but he will likely never release it. He quit touring shortly after those records were released and focused on his career, as he is one of the lead engineers at BMW. Sadly, it seems like we'll hear no more of his genius.