Mary's Ideas is an album by Umlaut Big Band, released in 2021. The album is a jazz 2-CD.

The personal archives of Mary Lou Williams, preserved at the Institute of Jazz Studies in Newark, bear thetraces of this prolific trajectory. The original manuscripts served as the main source for this project informed byprecise historical research. Thus, the Umlaut Big Band allows us to hear numerous compositions writtenbetween 1930 and 1981 and never-before-recorded.Here, for the first time, the work of Mary Lou Williams the composer and arranger, has been considered as awhole. This album was conceived around themes specific to her musical practice. A reading that we hope willshed new light on an unjustly neglected figure.