1
Captain Nadu started his tuneless humming once more, then abruptly stopped.
2
I didn't want to hear his low, eerie, tuneless humming.
3
A few moments passed before they heard a tuneless humming.
4
She kissed him warmly and let him go, smiling at the tuneless humming that accompanied his departure.
5
Still the smile, still the tuneless humming.
6
He would accompany the dancing sequences with a deep and tuneless humming, like a hive of distraught bees.