Arthurs Theme (Best That You Can Do) is performed live by composers Christopher Cross on lead vocals, Burt Bacharach on piano and Carole Bayer Sager on .brBurt Bacharach, Carole Bayer Sager, Christopher Cross and Peter Allen win the Oscar for Music (Song) for Arthurs Theme (Best That You Can Do) from Arthur .brBurt BacharachCarole Bayer SagerChristopher CrossPeter Allan. Vocal - Christopher Cross. Composed, Arranged And Conducted By Burt Bacharach. Lot of .brArthurs Theme (Best That You Can Do) composición para la película Arthur protagonizada por Dudley Moore y Liza Minnelli. La canción ganó el Óscar en .