Difficult Music

I saw a really bright rainbow while waiting for the #9 at Broadway and Commercial. It was almost a double rainbow—the outer arc was really faint and only went up about 45 degrees. No one else appeared to notice, except for a stroller-pushing couple with his 'n' hers metal hoodies (Slayer for him, Metallica for her). They held up their cell phones in unison and took pictures, then appraised the results on their respective screens.