Dennis DeYoung (born February 18, 1947) is an American singer, songwriter and keyboardist. He was a founding member of the rock band Styx and served as its primary lead vocalist and keyboardist from 1972 until 1999. DeYoung was the band's most prolific and successful writer, having been credited as the writer of more Styx songs than any other band member. DeYoung penned seven of the band's eight Billboard top 10 singles as well as a solo top 10 single. ==... [more on Wikipedia]