Ikimashou

Metal Machine — 5, objectively, this isn't suitable for a vocal contest. And overall, Sabaton has better songs that could have been submitted. However, objectively, the track is decent in general, although it doesn't grab your attention like their other compositions, and the instrumental part is pleasant.
「デレステ」こいかぜ (Game ver.) 高垣楓 SSR — 7, the girl has a pleasant voice, and maybe she's even cute, so I won't offend her. Although I won't consciously listen to this track again, ever.
[ENG SUB] Headphone Actor - Jin ft. LiSA (full version)【Lyrics MV】HD — 2, but this girl is probably terrible. I don't know what she looks like, but her voice is definitely unpleasant, and it's especially bad compared to her predecessor.
Herr Mannelig- Haggard Cover- By Ranthiel — 5, here too, the instrumental part is more enjoyable than the vocal part, although not by much. The girls sing boringly, and the blonde one is also terrible (although we're not evaluating appearances here). The guy didn't impress me either. In general, it's not completely bad, but I don't want to listen to it again.
Nagasaki — 6, I'm not a fan of this kind of music, but it's not a bad track either. The vocalist's voice isn't off-putting; it's just generally neutral. But I'll give it an extra point for the guys who quickly mumble the words; I've always found that skill amusing, and the guys do convey emotions.
Yunomi - ジェリーフィッシュ (feat. ローラーガール) — 5, boring, sluggish, inert, but not off-putting. It's just that I have the feeling that she was just woken up and forced to sing at gunpoint, and they promised not to pay her. Or maybe the producers threatened her family? Is everything really okay there???
Oonagh - Avalon — 6, it's worth a "okay" rating; in general, the girl has a decent voice, although it doesn't grab your attention.
The Real Gone Tones - Feed Me Ink (OFFICIAL VIDEO) — 3, the girl sings unpleasantly; I didn't like it.
The Moth & The Flame - Young & Unafraid — 7, it's a decent track, although it doesn't inspire much enthusiasm or make me want to listen to it again. It's just that the vocals aren't worse than that girl from Revan, but it's not good enough for an 8, because it won't make it into my playlist, and I won't listen to it again.
Enderal Bard Songs - The Wayward Wanderer [Sung by Lara Trautmann] — 5, a boring girl.
ImeldA May - Big Bad Handsome Man — 4, and this girl is even more boring and less pleasant, but there have been worse ones.

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12 - 4 - Aunt Klava from the cafeteria

But Aunt Klava from the cafeteria doesn't sing in this genre...