What Krautrock band had an album with a plastic sleeve that could slide back and forth across the gatefold...?

...creating a cool moving image on the inside of the cover?
Name the band.
Name the album.

鈺?鈩?鈺?- I'm moving over the next couple weeks, so there's not much excitement happening on the home front, other that packing stuff, and throwing out sh!t.
I should have checked my voice mail today, as a buddy of mine called and said, "hey man, my wife still has the flu...do you want her Van Halen ticket?
They're playing here tonight. Oh well, you win some you lose some! I'm not missing much...saw them in 1978, then again in '81.

Frumpy - "All Will Be Changed"

Smiley: That's where I got the answer, so you really answered your own question! Report It

It's Friday night....Shouldn't you be out giggin?

(:

Edit:

I've seen the show.

If you forget everything you've ever learned..just for a couple hours..it works!

uffff Smiley.... !!!!!!!!!!!! My brain is melting.

might be Kraftwerk? Or the Scorpions? Can't remember.
I lived in Germany for many years, but I was more into British and American bands... My favorite German band back than was BAP, they sang in a dialect from Cologne called Koelsch, imagine they had the booklet with the translations into "normal" German... but they were so good. I have also learned to like some of the heavy Rammstein songs and sing them in German with my daughters...( they call me Metal Mama now). My eldest daughter likes gothic German band called Lacrimosa.
What German bands do you like?

Wishi knew and can't wait to see buddy