Petrichor is the smell of rain. You wander the forest, breathe in the damp air. Eternal rain leaving puddles. You light a fire under a ledge to stay warm.
In your pocket is a damp note you found in the mud. "Remember The Sound Of Now - Δ" You tightly grip the handle of your umbrella as you toss the note into the fire. It turns to ash and its fragments rise into the air.