My brother has a band with some friends, and a week or two ago they were rehearsing and disagreed about a chord progression in a Santana song.

FORBES: The Amazingness of Spotify

That hey-what-the-hell casualness extends to Tweedy, whose tendency to start each of his singer-songwriter meditations with the same "Dust in the Wind" chord progression is almost confrontationally laid back.

CNN: Review: Wilco's 'The Whole Love'

Dakar's Orchestre N'Guewel offers "Mi Guajeo, " and while the opening notes initially sound based on Senegalese musical scales and instrumentation, a deeper listen reveals that the chord progression is based on the classic Cuban son montuno.

NPR: 'Africa Boogaloo': An Intro To Afro-Latin Music

In the third movement, for example, the setting is rather odd, with the two top parts playing repeated notes in a slow tempo, whereas the bass line and the chord progression are slow with very little motion.

NPR: Live in Studio 4A: Parnassus Avenue Baroque