Metal:

• Yn Gizarm - The Ruins of Loulan - Black metal from the solo project of a member of Zuriaake.
• Baradj - Qurai - Tatar folk metal.
• Nechochwen - Four Effigies - Classical guitar + black metal.
• Rattenfänger - Clausae Patent - A Drudkh side project, I think. Death metal.
• Csejthe - La mort du prince noir - Canadian black metal. Sounds like Burzum.
• La Rumeur des Chaînes - Erythème - Progressive black jazz metal. With horns.
• Drottnar - Victor Comrade - If they'd had metal in the Roaring Twenties, this is what it would have sounded like.

Accordion:

• Truart - Die Komposition 3 - Accordion-driven martial industrial.
• Feindflug - Sturmwalzer - More accordion-driven martial industrial.
• Barney McKenna and Tony MacMahon - The Wounded Hussar - An Irish folk tune played on accordion and banjo.
• Eläkeläiset - Humppamaratooni - A humppa arrangement of Whiskey in the Jar. Eläkeläiset almost made it to Eurovision once with Hulluna humpasta.
• Detektivbyrån - Life/Universe - Electronic accordion pop.