Cleaning Up Audio Tracks
There are quite a few people who spend a considerable amount of time in cleaning tracks from real recordings and trying to remove all noises. While to a certain extent this is a good idea, remember that “natural” noises are part of what makes a recording organic and real.
Things like key clicks, breath noises, briefly hitting a neighboring string on string instruments, bow noises etc. are part of the sound of acoustic instruments and for the sake of sounding natural should remain in your recordings. Only really problematic and loud unnatural noises should be removed.