Hans Jurgen Kursch, better known as Hansi Kursch (born 10 August 1966 in Lank-Latum/Meerbusch, Germany), is a German musician best known for being the co-founder, lead vocalist, co-composer, and lyricist of power metal band Blind Guardian. He was also the bassist in Blind Guardian until the 1998 album "Nightfall in Middle-Earth". He also provides lead vocals for the band Demons and Wizards.

Based on the paragraph above can we conclude that "The bass player for Blind Guardian celebrated his 22nd birthday the month before Nightfall in Middle-Earth was released. "?
It's impossible to say