Whistling

The boomerang hurtled whistling through the air.

Jim drove his car, whistling merrily.

He drove his car, whistling merrily.

He walked down the street whistling cheerfully.

The kettle is whistling on the stove.

My sister was whistling merrily.

He sauntered through the park whistling a tune he'd learned in his youth.

He was whistling a tune.

Imogen of the Internet can connect to dial-up BBSes by whistling into a funnel attached to a phone line.

The traveller went whistling through the forest.