Pitch correction in Music

It is long known that popular singer's vocals are pitch corrected through software. I mean off-key notes are adjusted. Yes technology can do wonders!

Computer Software is changing the way musicians create, record, and manipulate music. Software called Music Objects Recognition (MOR) can dynamically adjust music elements like harmony, tempo, melody, etc. and can even emulate human performance on the piano..!

Dr. Andy Hildebrand, Inventor of Autotune

Loudness war: over-compression in music

Ten minutes after you start listening to your favourite music album, you feel that something isn't right. Even though you love this album, you can't listen to it anymore. You shut it off, tired, puzzled, and confused.

This always seems to happen when you switch from a classic album to a modern one. What you've just experienced is something called over-compression of the dynamic range. Welcome to the loudness war.