A bright and colorful light in Dallas' music scene went out: Mark Ridlen, DJ and musician, passed away on November 17, following a bout with cancer; he was 65.

From his appearance in Ron Howard’s 1978 directorial debut, Cotton Candy, to his groups Quad Pi, Lithium X-mas, and a plethora of side projects with scores of DFW musicians, to his full-time job as a professional DJ under the moniker "DJ Mr. Rid," Ridlen had been a steady staple on the local creative scene.

He surfed pretty much every musical wave: from Dallas' epochal dance music scene in the early 80s, to punk rock to his role as one of Dallas' top DJs — the guy you called when you wanted your event to be cool and fun.

Ridlen had been quietly battling kidney and lung cancer for the past three years. Over the summer, he had his second kidney removed, which meant he was on dialysis treatment a couple times a week.

He remained upbeat, but according to friends of the family, two more tumors were recently found in his brain. His family and friends decided to forego further treatment and were by his side when he died.

He remained in demand until his passing. In May, he DJed a party at the Kessler Theater, celebrating the 40th anniversary of the Starck Club, the legendary '80s dance music club designed by Philippe Starck, which had a huge influence on Dallas, and which Ridlen was part of.

He was invited to DJ at the Starck Club when it opened in 1984 and remained in that role until the club closed in 1989.

Mark Ridlen (right) with close friend Reid RobiinsonFacebook

From there, he migrated to Expo Park, the underground neighborhood across from Fair Park where art and music ruled. His stints at XPO Lounge, Double Wide, and other neighborhood venues made him a staple in the community.

At the same time, he was a member of Lithium Xmas, a psychedelic art-rock band which he formed with acclaimed musicians Chris Merlick and Greg Synodis.

He was also a pop culture savant with a comprehensive knowledge of music, who balanced a low-key charm with a vibrant sense of style, able to carry off shirts with colorful pop-art flowers and flashy sequinned jackets with panache.

In August, a large circle of musicians and friends rallied to participate in a benefit, to help pay for his medical costs — a sweet indication of the high regard in which he was held.

“I do want people to know that I am not being slowed down by cancer,” Ridlen said at the time. “I'm ready to continue working. I have more-or-less a clean bill of health for the moment, and hopefully that doesn't change.”