Born in Carmarthen, Andrew Rees studied at the Royal Northern College of Music and the Guildhall School of Music, later becoming a Jerwood Young Artist at English National Opera and later became a principal tenor at the company.
In the UK, he has also worked for the Royal Opera, London, Chelsea Opera Group, Grange Park Opera, NI Opera, Opera Holland Park, Opera North and Welsh National Opera.
International engagements have included performances with the Angers Nantes Opera, the National Theater Weimar, the New Israeli Opera, the Netherlands Opera and the Stadttheater St Gallen.
Andrew Rees has previously sung Siegmund Die Walküre for Longborough Festival Opera.