- Bassist Roger Waters wrote “Part 2” as a protest against rigid schooling, particularly boarding schools. “Another Brick in the Wall” appears in the film based on the album. In the “Part 2” sequence, children enter a school and march in unison through a meat grinder, becoming “putty-faced” clones, before rioting and burning down the school.
- “Another Brick in the Wall” is a three-part composition on Pink Floyd’s 1979 rock opera The Wall, written by bassist Roger Waters. “Part 2”, a protest song against corporal punishment, and rigid and abusive schooling, features a children’s choir. At the suggestion of producer Bob Ezrin, Pink Floyd added elements of disco.
- Light (Wikipedia)
Light, visible light, or visible radiation is electromagnetic radiation that can be perceived by the human eye. Visible light spans the visible spectrum and is usually defined as having wavelengths in the range of 400–700 nanometres (nm), corresponding to frequencies of 750–420 terahertz. The visible band sits adjacent to the infrared (with longer wavelengths and lower frequencies) and the ultraviolet (with shorter wavelengths and higher frequencies), called collectively optical radiation.