When it doesn't fit anywhere else
 #74845  by strumminsix
 
Think of the progression immediately following Scarlet: B A , B E A

Now decompose that.

Start up with partial chords

Single notes

Etc, Etc

Keep that flow as long as you can as it decomposes.

Finally it will all fizzle out and just hang around the B with a few A accents here and there.