The Milwaukee band The Sheep made a unique international impact. Born in the local “Jesus movement” of the late ’60s, the group wound up in Finland to record their first album. Soon, they recorded a couple more LPs in England, where they starred in a stage musical that brought them back to the United States. Their original records can now command prices the size of car payments, but this 17-song CD rectifies some of the rarity. Tracks from vintage albums mingle with work by Sheep members recorded as late as 1998. The earlier work stands up best. Collectors of psychedelic-era rock would welcome a full anthology of the act’s initial works, but this project should do in the meanwhile.