soprano heather engebretsen from the u.s. singing for mozart's oprah the abduction from the sarah. and christina me to tyrion another one of the eleven artists at this year's both. born in southern russia christina began her career of the bolshoi theater in moscow since then she's sung on the greatest operatic stages in the world when you have what appears. to dale single does aria from rigoletto an aria from must needs mono and my favorite duet party g'kar from verities la traviata body joke i was. really coaching the audience loves judas aria and banal is my favorite singing is great for the sword to see. all of the artists offer their services for free on their special evening for a good cause. it's a very important topic not only for russia and germany but for the entire world this disease unites us in certain ways just as music unites us music gives us the strength to work together to combat the disease so they could do it. through bombs charity opera ghana is one of the highlights on the social calendar in the former german capital the proceeds go to the german aids foundatio