Hi Bill ...
No, I'm not Nat Hentoff, but I certainly remember the magazine.
In my university days (mid-70's), a friend and I hosted a radio show called "No Disco" on the campus radio station. We were on Fri-Sat-Sun nights from 10:00 - 2:00, and played a lot of prog rock and what we now call classic rock. It's was our "protest" against all of the horrible disco music which was invading every air-wave back then. Still makes me gag when I hear someone resurrect a disco piece for an ad campaign, whereupon I immediately resolve to NOT buy that product.
Our opening theme for the show was the middle guitar solo portion of "In-a-Gadda-da-Vida" by Iron Butterfly, which we used without permission. 
Doing little anthologies on the musicians / bands was a part of our routine, so it's a habit / hobby I've just stayed with. In those days there was no Internet, so we had to make use constant of magazines like Stereo Review, Melody Maker, Circus, Guitar Player, and of course Rolling Stone.
Back to Tangerine Dream, they're still performing without Edgar, although now as just a trio of Thorsten, Hoshiko, and Ulrich ... will never be the same.