Flowcharts are used in analyzing, designing, documenting or managing a process or program in various fields. There are a bunch of these floating around the internet in relation to songs. Here is The Beatles "Hey Jude" in a flowchart.
"Keep Calm and Carry On My Wayward Son. There'll Be Peace When You Are Done." Lay Your Weary Head to Rest. Don't You Cry No More. - I think this every time I see these signs. This is my favorite song to play in pep band