Bad Snacks demonstrates how to shape a synth sound in Ableton Live by using macros and browsing built-in presets on the Drift instrument while a chord loop plays back.
Macros are shortcut knobs that give you quick access to the most useful parameters of an instrument without diving into its full interface. Browsing presets while the loop runs lets you hear changes in context immediately, which makes it easier to judge whether a sound fits the vibe you're after.