Yeah 70s synth and new age music is def a bit of a thing with some of the lo-fi and 'noise' crew, has been for a while. I guess it follows on from other 'hippie' music. Which is cool but also annoys me a bit as I know how lots of those people, at least where I lived, were completely myopically dismissive of anything like that (and anything related to house / techno / rave) for so long. Always the way though.