Sound Lock is a simple feature that allows you to keep specific parameters of a patch and apply those same parameters to new patches. For example, let's say you like the FX section, Arpeggiator pattern, and the Modulation Matrix of a certain patch. Using Sound Lock, you can freeze all three and apply them to new sounds as you select them in the Patch Browser, all but guaranteeing you'll end up with an original sound with every click.