Deletion of Günter Lenz

Comment: Sources proffered since start of discussion plenty enough to indicate that the subject meets 
Stance: keep
Cited policy: Wikipedia:Notability (WP:MUSIC)

Comment: Leaving aside the nominator's assertions that ''"Every country has its own Wikipedia."'' and about |non-English references, what we have here is an article about a subject who, even just considering his 1960s activity, performed on a notable album (Astigmatic (album)) and was part of a noted ensemble led by :Albert Mangelsdorff; these would in themselves contribute towards  criterion 6. Subsequently, he performed with a broad range of other musicians and ensembles, as well as recording several albums with his own band. All of this is verifiable (in English) from the ''New Grove'' article about the subject, and brief mentions of the subject can also be seen in snippet views of other music encyclopaedias, in addition to which there are the sources (online and offline) in German and Italian which are detailed in the article; overall, enough to meet 
Stance: keep
Cited policy: Wikipedia:Verifiability (:WP:NOENG||:WP:MUSICBIO||:WP:MUSICBIO)