Bulgarian band named <a href="https://en.wikipedia.org/wiki/Akaga" class="extiw" title="en:Akaga">Akaga</a> performing at <a href="https://en.wikipedia.org/wiki/MS_Viking_Grace" class="extiw" title="en:MS Viking Grace">MS Viking Grace</a>. The band have got much popularity in Nordic countries and especially in Baltic countries.
<a href="//commons.wikimedia.org/wiki/User:Santtu37" title="User:Santtu37">Santtu37</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>