the.com/riff

A musical idea short enough to steal, catchy enough to own.

means A short repeated musical phrase that anchors a song — or, by extension, a quick improvised riff on an idea, spoken or played.

from Most likely a 20th-century shortening of 'refrain,' born in jazz musicians' slang for a catchy repeated figure. It stuck in big-band and blues circles before leaping out of music entirely — by mid-century people were 'riffing' on jokes and ideas, not just chord changes.

origin
shortened from refrain, jazz slang by 1930s
repetition
gets power from looping, not complexity
beyond music
now means any clever variation on an idea
guitar legend
smoke on the water is four notes, infinite royalties
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