 Key artists at the start were conductors Hans Swarowsky and Muir Mathieson, often with the Sinfonia of London, or Viennese orchestras.The development of new recordings was a special interest, under the celebrated recording engineer Anthony C. Griffith (1915–2005), who became recording manager for WRC in 1958.The Brahms violin concerto (Endre Wolf, violin, Sir Anthony Collins, conductor, WRC TP30) was a 1958 landmark for them, as technical details were published on the sleeve, recorded both in stereo and mono using Ampex equipment and Neumann microphones.