I included the pedal comments to underscore modulation sources to sounds after the rack…but message received.

that's not the modulation that you seek...

and they're not modulation sources they're modulation effects...

the modulation that you seek is voltages that fluctuate so that you can alter things on modules without using your hands - kind of like magic, but using electricity...

ie lfos/envelope generators/function generators etc + utilities to mix, multiply and mangle them!

"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia

Utility modules are the dull polish that makes the shiny modules actually shine!!!

sound sources < sound modifiers < modulation sources < utilities