The Royal Theatre Ballet School, Copenhagen. Painting shows violinist Busch, the ballerina Charlotte Weihe (standing centre foreground) and the ballet master Emil Hansen, seated on the right.
<bdi><a href="https://en.wikipedia.org/wiki/en:Paul_Gustav_Fischer" class="extiw" title="w:en:Paul Gustav Fischer"><span title="Danish artist (1860-1934)">Paul Gustav Fischer</span></a>
</bdi>
1889<div style="display: none;">date QS:P571,+1889-00-00T00:00:00Z/9</div>
<a href="https://en.wikipedia.org/wiki/Christie%27s" class="extiw" title="en:Christie's">Christie's</a>, LotFinder:  entry  <a rel="nofollow" class="external text" href="https://www.christies.com/LotFinder/lot_details.aspx?intObjectID=5620313">5620313</a> (sale 5955, lot 29)