Thanks to Philtaz and Kev 1 but I knew these weren't correct after I had listened to 32 recordings and none of them sounded like the advert. The nearest was by ANNA NETREBKO but even she was not the singer so I wrote to DFS and they came straight back with the reply. TATIANA LISNIC accompanied by the Malaga Harmonic Orchestra.
However I fell in love with ANNA NETREBKO'S voice and bought her CD on e bay. She is also very beautiful and of Russian origin. She is also on YOU TUBE.