The seven million people who bought Eric Clapton's Unplugged album and the countless more who saw the MTV Unplugged TV show experienced the work of Andy Fairweather Low, who served as Clapton's backup guitarist/vocalist. But probably few in that giant audience knew that Fairweather Low had once been a teen idol and had an extensive recorded catalog in groups and as a solo star. Born in Cardiff, Wales, Fairweather Low formed Amen Corner in the mid-'60s, for which he served as lead singer. The group scored six U.K. hits from 1967 to 1969, the biggest of which was the number one ...