It is true that people in rural and urban America listened to different types of music in 1915.
In tonal Western classical music (music with a tonic key or "home key"), the most frequently encountered chords are triads, so called because they consist of three distinct notes: the root note, and intervals of a third and a fifth above the root note. ... A series of chords is called a chord progression
They help the actor eliminate stage fright and help in preparedness.
I think the song is “What’s your Fantasy” by Ludacris and Shawnna
