Tenor who sang the Italian Singer in the Glyndebourne Der Rosenkavalier of 30 May 1965 (Glyndebourne GFOCD 010-65). Wikipedia's Der Rosenkavalier discography gives the name as Jon Andrew, citing Tim Ashley's Guardian review of 9 June 2011 and Max Loppert in Opera, July 2011; the 2011 CD sleeve itself prints John Andrew.