I think this experiment is slightly flawed, because what compression will do depends on the original recording. For me, the difference was most apparent in Susa

I think this experiment is slightly flawed, because what compression will do depends on the original recording. For me, the difference was most apparent in Susanne Vega and Katy Perry. Mozart and Neil Young were a complete shot in the dark, I could hear a slight difference with Coldplay. I suspect this very much depends on how the analog recording was digitzed in the first place, if there was an analog recording to begin with. A sample from a CD is not the same as one made from a vinyl or a master tape. Bottom line - there definitely is a difference, but in some cases it's hard to tell.