Jazz pianists Stefan Vasnier and Michael Kanan perform a program of compositions by Duke Ellington. The two pianists, both students of the late Sophia Rosoff, present songs from the secular and sacred sides of Ellington’s repertoire. Mr. Vasnier is accompanied by vocalist Joy Brown in selections from the Sacred Concerts, and Mr. Kanan is accompanied by guitarist Greg Ruggiero and bassist Neal Miner for some of Ellington’s greatest blues compositions.