Composer Mark Snow isbest for his work on the iconic X-Files theme as well as music for series such as Smallville, Ghost Whisperer, Blue Bloods and dozens of others.

Mark Snow, the Emmy-nominated composer behind the beloved X-Files theme song, has died. He was 78.  Snow died Friday at his home in Connecticut, a representative confirmed to The Hollywood Reporter.

Mark Snow, a long-working composer for TV shows like “The X-Files” and “Blue Bloods,” died in his Connecticut home at the age of 78.