By Josh Gross
I recently read an article in Rolling Stone about 20 albums critics loved in the 1970s, but that you've probably never heard of. They were right. I hadn't heard most of them, which is as good a reason to make and share a mixtape as any. So here it is, featuring tunes from albums by artists like Mitch Ryder, Kate Hudson's father, Paul McCartney's brother, a proto-band version of Electric Light Orchestra, and more.