Elvis Costello has sung jazz with The Charles Mingus Orchestra and pianist Marian McParland, explored hip-hop textures with The Roots, recorded with classical artists The Brodsky Quartet and Swedish mezzo-soprano Anne Sofie von Otter, penned an album with R&B titan Allen Toussaint, and written and recorded with Paul McCartney. Yet of his many rich, felicitous collaborations, the most celebrated may well be with legendary composer Burt Bacharach. Now, that partnership which has spanned over