Anni-Frid Lyngstad

Princess Anni-Frid Reuss, Dowager Countess of Plauen, widely known as Anni-Frid Lyngstad and also known by her nickname "Frida", is a Swedish singer, songwriter and environmentalist, who is best known as one of the founding members and lead singers of the Swedish pop band ABBA. 

Frida - Dancing Queen

Frida performing Dancing Queen with The Real Group at the Queen of Sweden's 50th Birthday Gala  at The  Royal Opera House in Stockholme.