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Why notes are sometimes fatter in the Piano Roll thumbnail? Their length, Note Velocity or Note Panning isn't any different and I don't recognize any difference in how they sound?

More sound generators like this:
https://mynoise.net/

With appetite to make my project less cluttered by "foldering" the structures of the song, it once had came to my mind that the Beat+Bassline Editor can be used to do that -- then I observed that all the instruments used in any pattern in the Beat+Bassline Editor have to be included under ...

How are the RC (12 dB and 24 dB) and SV filters different from the ones without those letters before their names? What kind of filters are the Vocal Formant, Fast Formant, and Tripole? In the two BandPass filter options, what does "csg" and "czpg" imply?

Ability to connect Sample/Beat Line Tracks to (any) channel on the FX Mixer isn't a feature in 1.2.2 nor in any other version, am I right?

A way for an even sound on different key ranges on synths?
The lower notes tend to sound too muddy, and/or the higher notes too shrill or even piercing, and the okay sounding range to be just of few keys. And then there is also the issue of the volume being uneven across the keys.