Mystic Shores (Ukraine) for Post Rock

Can't hear a great deal of Post Rock in this to be fair - on the bandcamp studio album in particular, any hints toward Post Rock tend to be drowned out by the Alternative Rock aspect of the music to my ears.

The band class themselves as Progressive / Post / Space Rock, however, and their very scant bio suggests that they have a somewhat unusual line-up which includes a harp:

Vladislav Salnikov / drums
Alexandr Mosesov / bass guitar
Hleb Kuharuk / guitar, samples, backing vocals
Dann Lychko / winds (harp)
Markiyan Harbych / vocals, acoustic guitar

Have to be honest though, I have watched the live videos over several times, and this 'harp' does appear to me to be quite skillfully disguised as a mouth organ...