Waltz in A minor, B. 150, KK IVb/11, P. 2/11, often designated as No. 19, is a waltz for solo piano
<bdi><a href="https://en.wikipedia.org/wiki/en:Fr%C3%A9d%C3%A9ric_Chopin" class="extiw" title="w:en:Frédéric Chopin"><span title="Polish composer and pianist">Frédéric Chopin</span></a>
</bdi>
<a rel="nofollow" class="external free" href="https://musopen.org/music/2617/frederic-chopin/waltz-in-am-b-150/">https://musopen.org/music/2617/frederic-chopin/waltz-in-am-b-150/</a>