Klaus Meine (born 25 May 1948) is a German singer and songwriter, best known as the longtime frontman of the hard rock band Scorpions. Meine and guitarist Rudolf Schenker are the only two members of the group to appear on every Scorpions album, though he did not join the band until 1969, four years after its founding. Meine placed at No. 22 on Hit Parader's 'Top Heavy Metal Vocalists of All Time' list in 2006.

Source: Wikipedia (https://en.wikipedia.org/wiki/Klaus_Meine)