For 10 points, name this instrument, which plays solo in six Bach suites.
One concerto for this instrument is in five movements, each of which has a superscript from a Baudelaire poem and the first of which is "Enigme." This instrument opens repeatedly playing the note D indifferente to represent "absentmindedness" in another work. Joaquin Rodrigo's two concerti for it are called "como un divertimento" and "in modo galante," while thirteen members of the Berlin Philharmonic who call themselves the "twelve" all play this instrument. Kaija Saariaho composed both Petals and Pres for it, and  besides Dutilleux's Tout un monde lontain and Lutoslawski's concerto, a Moto perpetuo e canto quarto is the ninth and last movement of one of three suites for it by (*) Benjamin Britten. Other works include a solo sonata by Kodaly and a group of works labeled BWV 1007-1012. For 10 points, name this instrument, which plays solo in six Bach suites.
One concerto for this instrument is in five movements, each of which has a superscript from a Baudelaire poem and the first of which is "Enigme.
{Cello} (Jha)