Keys to the Mysteries Beyond is an incredibly well-crafted black metal maelstrom if you view it on a track by track basis. Each song is solid and easily stands on its own. Where the problem lies is combining all those songs into a full-length album. The songs all sound the same regardless of where you start listening to the album. The band has the same tonal quality to the guitars throughout the album and the pace of the songs are breakneck with no deviation. If the band can tweak their guitar tones a little and add a bit of variety to the songs aside from pure speed and evil, then Grafvitnir will definitely be a monster to be terrified of.