Jacek Urbaniak, lider zespołu Ars Nova
<a href="//commons.wikimedia.org/wiki/User:Ejdzej" title="User:Ejdzej">User:Ejdzej</a>
CC BY 2.5
Own work, fragment of <a href="//commons.wikimedia.org/wiki/File:Kurps_in_Warsaw-44-Urbaniak.jpg" title="File:Kurps in Warsaw-44-Urbaniak.jpg">Image:Kurps in Warsaw-44-Urbaniak.jpg</a>