For the last 100 years or so, it has been pretty easy to explore and chart the ups and downs of popular music. In medieval times, however, it wasn't so so easy. Enter Corvus Corax -- a German outfit that plays exclusively dark-ages-era "pop" (for lack of a better word). The band focused less on the church music which dominated the era, and more on the music of the man of the, uh, fief, if you will, with authentic instruments, and period costumes. Formed by Castus Rabensang, Wim Dobbrisch, and Meister Selbfried in 1989, Corvus Corax released its first album, Ante Casu Peccati t...