The other day I walked exactly as long as it took to listen to Brahms’ “Variations on a Theme by Haydn.” Then I turned around, walked back and listened to the same piece again. Eighteen minutes down and 18 minutes back. Adding a couple minutes on each end for the turn-around and the cool-down made it a 40-minute walk, three to four miles.

It was simple. It was pure. It was exquisite. At least the musical part.

Usually my walks are prescribed by geography — to the end of the neighborhood and back — or by time — 15 minutes out and 15 minutes back. Measuring the walk by music was deliciously different: organic and thematic.

I don’t always have the freedom for a musical measure, but it’s something to aspire to.