The six Cello Suites, BWV 1007-1012, are suites for unaccompanied cello by Johann Sebastian Bach. They are some of the most frequently performed and recognizable solo compositions ever written for cello. Bach most likely composed them during the period 1717–23, when he served as Kapellmeister in Köthen.
Due to the works' technical demands, étude-like nature, and difficulty in interpretation because of the non-annotated nature of the surviving copies, the cello suites were little known and rarely publicly performed until they were revived and recorded by the Spanish Pablo Casals in the early 20th century. They have since been performed and recorded by many renowned cellists and have been transcribed for numerous other instruments; they are considered some of Bach's greatest musical achievements.
Pablo Casals is generally regarded as the pre-eminent cellist of the first half of the 20th century and one of the greatest cellists of all time. He made many recordings throughout his career of solo, chamber, and orchestral music, including some as conductor, but he is perhaps best remembered for the recordings of the Bach Cello Suites he made from 1936 to 1939. He was awarded the Presidential Medal of Freedom in 1963 by President John F. Kennedy.