Started out by founding the band The McCoys. Recorded the number one hit song "Hang On Sloopy" Went on to play with both Johnny and Edgar Winters. In 1982 played on two hits songs, one with Air Supply (Making Love Out of Nothing at All) and the other with Bonnie Tyler (Total Eclipse of the Heart).
Derringer has recorded with a wide ranging who's who of great musicians ranging from Barbara Streisand to Todd Rundgren.
First got noticed when he played as Gary Cole in the popular Central Valley band The Brogues from Merced.
Auditioned with fellow bandmate Greg Elmore for the Quicksilver Messenger Service. Duncan's exquisite interplays with the legendary John Cipollina helped to define the San Francisco sound. Several members left the group in 1971, but Duncan continued to play in various incarnations of the group right up to his death in 2019.
True Quicksilver fans always appreciated his musicianship, but to most people outside of San Francisco he labored in the shadow of the more well known Cipollina. It was Duncan who provided the blistering guitar solos on the album Fillmore - The Last Days.
Kirwan joined Fleetwood Mac in 1968 after months of following them around and studying the legendary Peter Green's style. Green credited him with helping to provide the counterpoint needed to complete the beautiful Albatross. On stage they were like in perfect unison but didn't get one well off stage.
Kirwan contributed two songs to Fleetwood in Chicago a cult favorite where he and the band played with several great Chicago blues musicians.
When Green left, Danny Kirwan had to carry a larger role in writing the band's material. Kirwan wrote a large share of the songs on the band's subsequent albums like Kiln House and Penguin. Played with Bob Welch after founding member Jeremy Spencer left the group prior to a concert in Los Angeles.
Danny suffered a serious breakdown from the stress of constant touring and excessive drinking and was later fired from the group.