Concept albums are tough; most of them end up feeling really bloated, the ideas taking too much space from the music or the "gravitas" with which they are delivered leeching away a lot of the fun. That's why it's super important that bands don't take themselves too seriously, either directly in the music or in the "meta" of it, like videos, cover art or the general aesthetic of the band. A good example is Canadian weirdos (a word we use with a heap of affection) Bird Problems. Their upcoming album, Tar, is a concept album revolving around a virus reminiscent of the zombie inducing one in works like Resident Evil. However, this virus's effects are under debate: do they actually include people turning into zombies or are they just aesthetic?