Dazzling duets from four decades of BBC entertainment, from Parkinson to the Proms. Whether it's pianos or banjos, violins or voices, kora, erhu or harmonica, this is a journey full of striking partnerships and extraordinary combinations. Oscar Peterson, Larry Adler, Ballake Sissoko, Kiri Te Kanawa, Nigel Kennedy and Bela Fleck are just some of the featured artists bringing us a musical feast, full of fun and surprises.