October 15th 1930; the legendary composer and bandleader Duke Ellington was so famous for his poise and charm that it should be no surprise that he had a pithy story at the ready whenever he was asked about one of his most famous and enduring works, "Mood Indigo." Of the song he and his orchestra recorded for the very first time on this day in 1930, Ellington was fond of saying, "Well, I wrote that in 15 minutes while I was waiting for my mother to finish cooking dinner." As neatly as that version fit with his well-tended reputation for effortless sophistication, the true account of the song's development reflects the gifts for collaboration and adaptation that were always critical elements of Ellington's genius.