Backing vocalists sing with other backing instrumentalists.
The Sankenbach Waterfalls -LRB- Sankenbach-Wasserfalle -RRB- are a cascade southwest of the village of Baiersbronn in the Black Forest in Germany .. Baiersbronn. Baiersbronn. Sankenbach. Sankenbach. cascade. waterfall. Black Forest. Black Forest. Germany. Germany. The Sankenbach flows over the waterfalls , dropping a total of 40 metres .. Sankenbach. Sankenbach. The falls drop down the headwall of the cirque of the Sankenbach Bowl -LRB- Sankenbachkessel -RRB- in the Eckscher Horizon -LRB- Eck 's cher Horizont -RRB- of the Lower Bunter Sandstone .. Sankenbach. Sankenbach. cirque. cirque. Lower Bunter Sandstone. Lower Bunter Sandstone. Shortly afterwards the Sankenbach feeds the Sankenbachsee .. Sankenbach. Sankenbach. Sankenbachsee. Sankenbachsee. The volume of the waterfall can be regulated by visitors by impounding the inflowing water in a small retaining basin above the upper waterfall using a slider .. The volume of the cascading water increases for a while after the slider is lifted .. It is operated from a footbridge which crosses the little reservoir by means of a long wooden lever .