The problem is the huge difference in dynamics between "old" and "new" recordings (that is, not just their maximum level) which makes really hard if not impossi

The problem is the huge difference in dynamics between "old" and "new" recordings (that is, not just their maximum level) which makes really hard if not impossible to have more tracks sounding near the same level. This Wikipedia article about loudness wars explains the problem in details. https://en.wikipedia.org/wiki/Loudness_war https://en.wikipedia.org/wiki/Loudness_war