Bach most likely composed them during the period 1717–23, when he served as Kapellmeister in Köthen. They are some of the most frequently performed and recognizable solo compositions ever written for cello. The six Cello Suites, BWV 1007–1012, are suites for unaccompanied cello by Johann Sebastian Bach. Title page of Anna Magdalena Bach's manuscript: Suites á Violoncello Solo senza Basso