By a singing group.........name "The Rays"............in geometry a line is a ray..........if it goes from one point forward.........in one direction.................as in it has a dot and and arrow.............rays.........radiating out..........like many DC metro posters....


The post yesterday had poor quality..............two sil. on the shade..........

The Rays - "Silhouettes"

https://www.youtube.com/watch?v=qC-eQ0yKQ8o