Went to a punk rock concert last night.
I didn't know a lot of the songs so I zoned out a bit looking at the light bouncing off the audience.
To simplify this light show I lowered the opacity of the crowd with a layer mask. Then added a simple silhouette between the crowd and the black background
lower than 50% = darker gray = more transparent = shiny
50=Neutral gray
higher than 50% = lighter gray = more opaque = dull
I like the range between 50-30 the best
Color to Alpha for the overlapping parts and blurred the edges of the colored silhouette
2 generated fog layers overlapped and color added
add a white gradient at the top and a dark gradient at the bottom.
crop out the ugly parts