This series is of immense value to consumers of the French Classics CD series. These are alternate takes, in chronological order, of historic jazz (and some blues), with a strong representation of the swing era. Vol. 4: 1933-1936 -- The Alternative Takes, contains 25 Duke Ellington tracks on a single disc, including multiple versions of "Blackbird Medley," along with single takes of "Drop Me off at Harlem," "Moonlight Fiesta (Puerto Rican Chaos"), and "Harlem Speaks." While the disc is definitely directed toward collectors, anyone with an interest in this period of jazz will also enjoy it.