Matthew Halpin (s) in concert with Nils Tegen (dr), Martin Schulte (g), David Helm (b), and Veronika Morscher (voc) at the ARTheater, <a href="https://en.wikipedia.org/wiki/Cologne" class="extiw" title="en:Cologne">Cologne</a>, Germany, November 3rd, 2015
<a href="//commons.wikimedia.org/wiki/User:Annamarie_Ursula" title="User:Annamarie Ursula">Annamarie Ursula</a>
CC BY-SA 3.0 de
<span class="int-own-work" lang="en">Own work</span>