Solo multiple stems to hear groups (e.g., drums).
Pan tracks to create a wider stereo image.
Mute vocals for an instrumental version.
Use -24dB filter slope for surgical cuts.
Highpass non-bass stems to clean up the mix.
Subtle reverb (10-20%) adds cohesion ("glue").
Sync delay to BPM for rhythmic texture.
Boost High EQ on vocals for clarity.
Cut Low EQ on everything but bass and kick.
Bandpass + High Q = "Telephone" effect.
Hard pan similar stems left/right for width.
Experiment freely – Reset is always there.