Dark ambient library music
Stock music collection of atmos and drones for use in film, TV, games, videos, etc.
Royalty-free music under Creative Commons 4.0 licence. Pay once, use forever.
16 ethereal, atmospheric tracks of music and sound design for your media productions.
All tracks are at 80 bpm. The key or pseudo key is given in the file name. When you read C or E, it means either it's just that note or notes in octaves, or a power chord (chord without a 3rd) of that note. Some have varying pitches or are atonal in nature.
More material available on Pond5 (www.pond5.com/artist/Dark_Side_of_Synth)

Abyssum Drone - E - 80 Bpm

Indie music maker, available for sound design & music for media.

I grew up with music & technology, and I love them both.
I love many genres but rock and electronic music have a special place in my heart.

Why the name Dark Side of Synth? Because it’s cool and it sums up my fascination with the dark side and with synthesizers. Dark side not just as negative but also as obscure, unknown, unexplored...

Don’t worry, you won’t be finding only darksynth, heavy, scary and sad tunes and tones here but quite a wide range and lots of happy, upbeat things too. Again, it is just a name – not a mission statement set in stone forever.