This YT clip is of Maren Kroymann, a German singer, actress, and cabaret performer performing a hit song from 1977 or so, 'wie ein Tiger'. If you are wondering about her strange body language, she is parodying a German pop singer named Peter Krauss, whom you can see here if you really want to. I prefer Maren and her band, an amazing guitarist and an amazing piano player. (playing in tiger-skin gloves!).