http://www.head-fi.org/a/high-res-music-download-sites
http://www.24bit96.com/24bit96khz-download-sites/hd-music-download.html
http://www.whathifi.com/news/high-resolution-audio-everything-you-need-to-know
This is directed to anyone: be very, very, very careful about what and where you buy with these so-called HD music albums. A year ago I ventured into the HD music scam. High resolution music: offering many times more resolution than a standard CD. Must be good, right? More resolution is better, right? Awesome, they have Michael Jackson's "Bad" album! One of the best-selling albums of all time. This must be in my music library! *buys 24/48 version, thinking it's better*
Nope, nope, nope, nope, nope, nope, nope. This was probably one of my most regretful moments in my audio journey.
A: Loudness war (I had no idea what this concept was at the time)

^ you can quite easily see that this was remastered as it has a clear line as to where the music's dynamic part stops
B: CD-quality origin(?)

^ 44.1 kHz sampling rate is the Red Book standard; Nyquist sampling theory states that the maximum frequency obtained is half the sampling rate (44.1 kHz / 2 = 22.05 kHz); you can, again, easily see that the cutoff frequency was ~21 kHz here and there's added stuff above it in some parts of the song
C: Clipping. Clipping as far as the eye can see....

^ words need not to be said
As they say: garbage coming in, garbage coming out.