Polarkreis 18 is the German band that produced the very popular music video for their song Allein Allein which by 15 Feb 2017 had over 9 million views. The pre release sales of their song has reached the top 10 of Amazon sales. Their Facebook page has thousands of fans. The song Allein Allein is available on iTunes.
Below is the music video posted to YouTube by Polarkreis 18. The video is not complete. It ends shortly before the end of the song.