Sad news for Blue Bloods’ Donnie Wahlberg and Tom Selleck

Snow, who scored nearly 290 episodes of the Tom Selleck and Donnie Wahlberg police procedural drama, was 78 at the time of his death, the cause of which has not been reported.

He is best known for composing the theme song of the Fox series, The X-Files, which starred David Duchovny and Gillian Anderson.

Snow also scored the popular television series’ Hart to Hart, T.J. Hooker, the Superman prequel Smallville, and Ghost Whisperer.

The Juilliard-trained composer, who was born in Brooklyn, earned 15 Emmy nominations throughout his career, which began in the mid-1970s.

Fellow composer Sean Callery, who scored 24 starring Kiefer Sutherland, paid tribute to Snow, whom he considered a mentor and a close friend for more than three decades.