I remember the first time I stumbled across Alec Benjamin on Spotify, a 30-year-old indie singer-songwriter from Arizona. A smart shuffle on a cold, windy day my freshman fall had dug up “Let Me Down ...

Notes with frequencies that are in simple whole-number ratios, like 1:2, 2:3 or 4:5, sound good when played together. This is the basis of musical harmony. After unison (1:1) and the octave (2:1), the ...