Miliken Chamber - Disorder
For a nice dark synthwave tune that starts off soothing before increasing the beat and vocals just slightly, look up DISORDER, by Milliken Chamber. The vocals are on the soft side throughout, but the echo-ish sound combined with the darkwave synths make for a great addition to your catalog. Why I love this genre is the breadth of all sorts of beats ranging from light to super intense, and this one is a nice lighter addition where it emulates the darkwave synth sound but is a light smooth ride the whole way. Give it a listen.