On 26 September 2009, BBC Radio 3 transmitted a unique documentary, “Who Was Carlos Kleiber?” Produced by Paul Frankl, and presented by Ivan Hewett with research by Ruth Thomson, this feature was based on interviews with four who knew Kleiber well: tenor and conductor Plácido Domingo, music administrator and Intendant Sir Peter Jonas, music journalist and critic Christine Lemke-Matvey, and conductor–pianist Charles Barber. A transcription of the program is available at http://www.carlos-kleiber.com/resources