Gary Wright, a founding member of Spooky Tooth best known for his synth-drenched mid-'70s solo hits “Dream Weaver” and “Love Is Alive,” died Monday at his home in Palos Verdes Estates, California. He was 80.

Wright’s son Justin told ABC News that his father had been battling Parkinson's disease and Lewy body dementia for the past six years.

Initially a much sought-after session keyboardist, he had a long association with George Harrison, starting with All Things Must Pass and including another six of the former Beatle’s solo albums. He also backed Ringo Starr on “It Don’t Come Easy” and “Back Off Boogaloo.”

The New Jersey native was studying medicine in Berlin while also playing in bands when a chance meeting with Island Records founder Chris Blackwell led to a trip to London, where Wright was introduced to pianist Mike Harrison and drummer Mike Kellie. They became Spooky Tooth.

Wright, who cowrote every song, left the band after three albums and signed with A&M, releasing his solo debut, Extraction, in 1970. Bassist and Beatles associate Klaus Voorman played on the album and introduced Wright to the former Beatles.

Spooky Tooth re-formed long enough to put out another two albums before Wright departed for New York and signed with Warner Bros. Records. Both of his hits were on 1975’s The Dream Weaver; “Dream Weaver” and “Love Is Alive” both peaked at #2 in 1976. The album was Wright's lone Top 20 hit, reaching #7.

His final Top 20 single came in 1981 when “Really Wanna Know” hit #16.

Wright continued to release solo albums and work on film scores in the 1980s, re-forming Spooky Tooth in 2004 and touring as a solo act and with Ringo Starr & His All-Starr Band.