For most of her career, vocalist and songwriter Judy Dyble was thought to have had a brief but fascinating career as an early member of one of the U.K.'s most important folk groups. But she began a prolific second act when she launched a solo career at the age of 53. Dyble was a member of the iconic folk-rock band Fairport Convention in 1967 and appeared on their debut album, but parted ways with them in 1968. She was also associated with the playful art rock trio Giles, Giles & Fripp and cut an album with the psych-folk duo Trader Horn before dropping out of music in 1973. Em...