The whistle player was trilling away, we were joining in on the chorus.
A herd of cattle was being driven along the road from the village, and over the fields the larks rose trilling, one after another, like bubbles rising in water.
Occasionally, a content cat may even purr and make other noises at the same time, such as making trilling or snorting noises.
Moderato con anima is lively with clear trilling birdsong.
They could be dipping in the waters for marine tidbits, trilling contact calls across the stillness.