Oscar Schmidt Autoharp - chord bar buttons on chord bars (2015.11.17 14.33.25 by David Hilowitz)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/12176869@N00">David Hilowitz</a> from San Antonio, USA
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/dhilowitz/23253802660/">Autoharp</a>