I am not familiar with metal music, but feeling of it appears to be well represented.
I tried your skin on my iPhone 14 Pro (19.5:9) and the layout was not significantly disrupted.
However, in portrait mode, part of the top edge of the album artwork and the next track information is hidden or clipped by the rounded corners of the display and the dynamic island.
This is probably not a problem at all on devices with 16:9 displays.
If you are considering for other aspect ratios, it will be good option to researve margins to avoid the "obstructions" on recent mobile display.
Just for your information.