Regarding my sound - no, I do not amplify or normalize. Sometimes I think that maybe I should amplify because I know that I do record at a sort of low level because I'm always trying hard not to clip (get in the red zone with too loud sound). Did it bother you that you had to perhaps turn up your speakers in order to hear my recording? I hope you come back and tell me, since this is very interesting and important to me.
It didn't bother me particularly but the Ravel was noticeably quieter than other pieces I listened to from another thread on this site. The de Falla pieces were fine (and I know I mistakenly typed "these recordings" in my reply, please ignore that). It didn't sound "wrong" or anything but I personally always amplify my (admittedly rare) recordings to minus a few dB unless they are really quiet pieces. With the digital recorders everyone uses now being so quiet, amplifying in post isn't going to cause a great deal of additional noise.
For example, the Ravel peaked at -10dB and although it is a quieter piece I think it could have done with being brought up a little. For each 6dB a track is amplified by, the perceived loudness doubles. These add up, so 12dB will make it four times louder and so on. Judgement is needed as a really
quiet piece brought all the way up to zero dB would probably just sound wrong.
But to repeat, in its present form it isn't problematic and I enjoyed it a lot. In fact I'm listening to it again and now I look at the score I note that it varies between p and pp throughout, so feel free to ignore me!
NB if you're using Audacity, there's a difference between "Amplify" and "Normalise"
. However for solo piano, where both channels are usually recorded at the same level, this difference is less important than it might be otherwise.