A full album post is arguably one of the least interesting/most useless posts you can make in a music subreddit. Album posts always fall into one of two categories:

• An album by an extremely well known band. Everyone has either heard these albums or is well aware of their existence. They do not need a reddit post to remind them.

• An album by a virtually unknown band. Nobody is going to take 40+ minutes out of their daily listening just to put on your buddy's band.

In both scenarios, posting a song is a far more effective post. People are far more likely to engage with something that's seven minutes long. If it's an old band, people may be looking for a reason to check out their deep cuts. If it's a new band, people are more willing to try them out.

Full album posts clog up the subreddit and it just becomes a spamfest. This is a light traffic subreddit that gets very few posts a day. Make sure those few posts we get are quality.

In addition, it's not a rule, but a great way to get post engagement is to post FFOs. (For Fans Of) Thrash has a lot of similar qualities, and most people generally know what thrash sounds like, but there is absolutely variety. Cryptic Slaughter does not sound like Dark Angel. Razor does not sound like Heathen. A great example of a post:

Artist - "Song Title" (Year of Release) (FFO: Band A, Band B, Band C)

Boom, you gave everyone the context for reasons to check out the band, whether the band is new or classic, and the proper spelling of the band's name so they can check them out on Facebook or Metal Archives.