Machine Music : Strictly One Layer Painting

Strictly One Layer Painting Series
Just random exploration of this new habit of mine called "Strictly one layer painting"
Rules for me:
No "new layer" during process.
During the process file should be saved as jpeg not psd meaning No "Adjustment layers"
Single brush if possible.
Less undo
Exactly like traditional painting. except adjustments are allowed as long as they are not in a layer that can be edited later.
Painted everything in photoshop. Time takes less than 4 days.