Illinois: Visualizing Music is a project by graphic designer Jax de Léon, he analyzed the ablum Illinois by Sufjan Stevens in 9 different ways and visualised his findings. The Vocal Album Grid is one of them.
Each square on the grid represents one second of the entire album. Each row makes up one minute and adds up to 1 hour, 14 minutes and 13 seconds. Colored squares indicate the subject of the lyrics being sung during each second, while gray squares indicate when there are only instrumentals and no lyrics are being sung. Multiple voices sung simultaneously are indicated by splitting up the square into sections. Other marks indicate back-up singers and non-word vocals such as “ooh” and “ahh.” Note: All information is approximate.
found at voodoovoodoo