Of all the decades you can listen to, I think the 70s are the most strange of them all. Maybe one of the most referenced, too.
An electrified array of country, folk, funk, rock, progressive, experimental, electronic, punk, disco, post-rock. A lot of previous era music had limitations in recording technology... barring later aspects of the 60s. This was a "world" thing, mind you, I think It's easy to think about these timeframes from a British or American standpoint.
CAN came about in the late sixties and developed into the 70s. They were a strictly experimental band stuck under the label "Krautrock" - German psychedelia of the 60s, essentially. Malcolm Mooney performed vocals (Soul Desert, Soundtracks), as well as Damo Suzuki (Halleluwah, Tago Mago). The former would leave, and return in 1976... the later would leave entirely after 1973. This is uber importante because you gotta know who's in the band.
The group as an entity created songs and compositions that were largely spontaneous, jarring, hypnotic, groovy, and improvised. As early as 1969 with the song "Mother Sky (from Deep End)" off of Soundtracks, the group employed heavy overdubs that could be most recognizable on percussion and drums, pushing the 5:00 mark... and as late as 1975's Vernal Equinox off of "Landed".
I'll have strong feelings about your music if it starts with only one channel
Much of their music feels improvised, the listener, unsure of where the soundscape will take them. What they're doing is almost a template for the post-rocker droning out longer, expanded songs... or the experimental noise artist smashing shit in his basement; recording owls and adding reverb using a pirated copy of Ableton Live.
Other bands like Faust, Amon Duul II and Neu! did this as well, but they're not the point of the post. Exploring controlled chaos, creating entirely "new" music, and pushing the art of recording were what all of these guys did. By the 60s, Germany was going through an interesting development - I'll link this documentary by the BBC you can watch on your own time.
I can leave you with this - the payoff for reading this far, or at least, skipping to the end.
If you grew up with a playstation you might have had a wave of nostalgia from the first song.
Here's Instructor Mooselini's Driving Test from Parappa the Rapper, released in 1996.
These aren't revelations by any means, but man are they funny to me.
CAN - Turtles Have Short Legs
Parappa the Rapper - Driving Test Level
Japanese Denim - Daniel Caesar https://itunes.apple.com/us/album/get-you-single/id1165524312