Whenever I put on music I have two categories I choose from: Music that I enjoy, and music that I enjoy that I feel comfortable putting on with other people around.
One of my go-tos from the latter category is a band called Serpent Throne, and the album I specifically like to put on is Brother Lucifer. That sounds pretty bad from names alone, but bear with me here.
It's instrumental. No vocals, no screeing or anything. That already keeps it playing for longer than ten seconds. It's still probably a little more heavy than what would play most of the time but it's a far cry from Industrial Symphonic Death-Thrash or whatever I turn on to relax and it helps that there's no guy screaming about Timothy McVeigh. I'd like to imagine that the album has enough of the bluesy side of doom metal to not weird people out. The solos are still a lot of fun too. The last song, Napalm Mourning, is a very powerful song and the outro is fucking amazing, I love it.
The album, from the various song names and album cover, has a Vietnam theme. Without lyrics to explicity state it, you can take the songs as they are or imagine RS2 Vietnam gameplay as you listen to it. At the very least, I hope that it's an album that someone can listen to without having to grow out their hair and yell UP THE IRONS whenever they see something "brutal."