Glitchedtones is a UK-based sound effects label with a focus on bringing unique audio content to media producers of all genres. Specializing in glitch elements using unconventional sound generators and recording techniques, the Glitchedtones output is perfect for anyone seeking audio with an edge. Feedback loops, granular synthesis, databending, circuit bent toys and more are exploited to deliver a versatile palette of unique sounds suited to a variety of multimedia projects.
Fright Night: Darksynth is a set of Serum synth sounds, with excellent sound quality and useful presets. They have an analogue essence to them that are not often found in many preset packs. And the Cthulhu set is a wonderful, useful bonus. I have also used Glitchedtones' Retrowave (Synthwave) presets and immediately liked their talent in creating sound sets. I highly recommend Darksynth for soundtrack and darker forms of electronic dance music in general.
Full Disclosure: I initially had minor difficulties with my order, but the team at Glitchedtones quickly rectified the situation. I could sense they take their work seriously, which only makes me more interested in their other sound libraries.