Overkill has 18 albums and only about half of them are on spotify. Ones i know are missing are their debut and the killing kind. Also my favorite band annihilator is missing a bunch too such as king of the kill, remains, and carnival diablos. I saw a bunch of these songs on playlists but they were like blacked out and when they came on it would just skip the song so i know they were on spotify before. Please get this fixed.
Listening from the US. Not sure if these are on Nuclear Blast or not, but these are missing:
Gamma Ray - Majestic
Tarot - Gravity of Light
Tarot - Crows Fly Black
By comparison I found that Google Play is missing these, plus MUCH more (which is why I left GPM for Spotify.) Apple iTunes (via google search) apparently has the Tarot albums but not the Gamma Ray one, but I've never personally used iTunes.