Never heard of this album so had to look it up. Very strange genre for Frank Zappa considering...
From Wikipedia: "Francesco Zappa (born in 1717 most probably in Milan, died on 17 January 1803 in The Hague[1]) was an Italian cellist and composer who lived most of his adult life in The Hague, the Netherlands. He was highly regarded for his virtuoso cello playing and his compositions were published and distributed throughout Europe. Zappa was of importance to the musical life of the Netherlands, and made substantial contributions to the quality, vibrancy and international outlook of The Hague's 18th-century music scene as a performer, composer, concert organiser and teacher.)