Agree...
Standouts where a definite difference could be heard?
Etta James, "Love Songs".
Track #1, "At Last".
Change? Etta’s Voice. Polarity inverted her voice was thin. Correct polarity her voice was full, a more moving presentation.
Chris Rea, "Auberge".
Track #11, "The Mention Of Your Name".
Again the voice of the singer stood out.
Buddy Holly, "From The Original Master Tapes".
Track #20, "True Love Ways.
Difference? Not only Holly’s voice, the saxophone as well. Definitely the saxophone....
FourPlay, "Between the Sheets".
Track #1, "Chant"
Difference? The bass drum.
Jenifer Warnes, "The Hunter"
Track #8, "Way Down Deep"
The drum, which I believe, is an African Djembe Drum.
Diana Krall
Pretty much any early CDs. Piano solo passages.
Use good CD recordings. Best solo passage instruments to listen to:
Horns. Trumpet and saxophone.
Percussion :
Bass drum, Kick pedal drum, African Djembe Drum.