He hummed along as he played and, fearing injury, he refused to shake hands with people.

NPR: The Variations of Glenn Gould

My father must have hummed a tune as I stood on his shoes and he waltzed me, but what I remember are the giant steps I was suddenly making.

NPR: Excerpt: 'The Importance of Music to Girls'

Composers wrote complex pieces meant for instruments of varying sizes and levels of delicacy, and as history hummed its way from Monteverdi to Mahler, orchestras grew larger and less mobile (just ask any double-bass player).

FORBES: TRACKING THE EVOLUTION OF TAKE-OUT TUNES

That's not quite as usurious as it sounds because even though Brazilian inflation has been considerably tamed, it's hummed along for the past 12 months at an average of 7.2%.

FORBES: A lively bird that gets the worms