Interesting that you note the change in timbre. This is a big difference between classical playing and other styles. Classical emphasis is on pure tone and keeping the timbre the same. Jazz and other styles often accentuate differences by incorporating otherwise rough sounds (growls, split tones, screams, etc.). I'm fond of using various textures that put the instrument in the background or foreground and assist in giving feeling/meaning to what's played. This is hardly unique, but it's interesting that you've commented when it's so common.
In terms of mix, there isn't any. It's a zoom recorder set down in the room with it's own microphones doing the recording. Not possible to change what the recorder hears and I use dynamics a lot, so the quiet parts are low, while the loud parts are loud. The electric guitarist (like most) plays at one level and needs to turn a knob to change his level. This is an impromptu jam, not a serious recording. Just thought it was interesting enough to post as it uses an interesting mode. Spontaneous composition is at its core rather than reading or playing a "standard". It may not always be slick or brilliant, but has its challenges and (for me) rewards.