From Classics IV's official website:
Dennis Yost, lead singer of The Classics IV, the 1960's soft rock group responsible for hit records such as "Spooky," "Stormy," "Everyday With You Girl," and most notably the group's highest charting record, "Traces of Love," passed away suddenly early Sunday morning, December 7th, in a hospital on the outskirts of Cincinnati, OH with his wife Linda at his side. Dennis was 65 years of age.
Yost, who had been hospitalized in 2005 for a traumatic brain injury sustained after a fall, never fully recovered from the incident, however the cause of death is not believed to be related. A benefit concert, hosted by Jon "Bowzer" Bauman of Sha Na Na fame, was held last year to help raise money for increasing medical costs the Yosts were incurring. Several of Dennis' musical peers showed up to perform, including Mark "Flo" Volman of The Turtles, The Skyliners, Chuck Negron, formerly of Three Dog Night, and many others.
The Classics IV originally hailed from Jacksonville, Florida, where Yost was raised by his mother Marie Lupato, but recorded all of their hit recordings in Atlanta, GA under the supervision of producer Buddy Buie and Bill Lowery, founder of Lowery Music, Inc. In 1993, Dennis Yost & The Classics IV were inducted into the Georgia Music Hall of Fame.
In the mid 90's, Dennis received a letter of cease and desist, ordering him to stop using the name "The Classics IV" from a lawyer representing a bogus band who had acquired the trademark through other means. Yost sank into a depression as he continued to tour, hopeless that he would ever get the name he helped make famous back, while another group with no original members reaped the profits. Fortunately, in the latter part of 2000, Yost regained ownership of the trademark to "The Classics IV" as part of an out-of-court settlement. A documentary on Yost's struggles is currently in post-production.
Dennis was the last touring member of the original Classics IV.