(Click here to hear Concerto for Jazz Orchestra) From the time I became the principal director of the WDR Big Band in the fall of 1994, I started thinking about the possibility of composing a multi-movement concerto for jazz orchestra specifically for that band. I decided that, if it was to be for a jazz orchestra, it should be written expressly for the special qualities of the particular musicians in the band and should also showcase the skills of the individual sections as well as the full ensemble. However, it wasn’t long before my interest in the immediate projects at hand and the excitement of writing for a wide range of internationally known guest soloists kept my creative imagination occupied and the idea of the concerto was forgotten. For some unknown reason, my attention returned to it during the spring of 1999, while looking forward to a good deal of free time in the summer months just ahead. It seemed like the time was right, and I planned to compose the piece in time for one of the band’s fall programs. The idea of a concerto for jazz orchestra was initially inspired Bela Bartók’s Concerto for Orchestra, one of my favorite pieces of music since my college days in the mid and late 1960s. In terms of overall dimensions, Bartók’s scheme of five movements also appealed to me. It seemed to me that five movements could more completely display the exceptional ensemble and solo skills of the WDR Big Band and also allow for maximum range of tempos, expressive moods and orchestral colors. I eventually decided that the outer movements would be relatively fast swing in 4/4, with the slow movement in the middle, also in 4/4. For contrast, the second movement would be a medium tempo jazz waltz and...