The Dictionary of Welsh Biography defines its purpose as 'biographies of individuals who have made a significant contribution to national life, whether in Wales or more widely'. David John Jones (Dai Tenor) was a Welsh singer who was - extraordinarily - discovered whilst he was a steel worker. He embarked and established himself on a highly successful career as an opera/concert/radio performer for over 4 decades. His exceptional  tenor range was recognised as being outstanding by leading artists including Gigli who invited him to become his understudy at La Scala, Milan. His concerts on stage and radio all over the UK, and particularly in Wales, brought pleasure to thousands. His name and biography should be recorded for posterity in this fine compendium.