croon

Etymology

From Middle Dutch kronen (“to groan, lament”), from Proto-Germanic *kre-, from Proto-Indo-European *gerH- (“to cry hoarsely”). a person crooning

verb

1. (transitive, intransitive) To hum, sing, or speak softly or in a sentimental manner.
   He was crooning a Frank Sinatra song.
   He was crooning, but I couldn't make out what the song was.
   "Nice seeing you both," a woman at the check-in said. "Hey, I love you," another crooned. 2020, Sydney Ember, “Sanders drives himself to the polls.”, in New York Times
2. (transitive) To soothe by singing softly.
3. (Scotland) To make a continuous hollow moan, as cattle do when in pain.
   Even the dull cattle crooned and gazed. 1813, James Hogg, The Queen's Wake

noun

1. A soft or sentimental hum or song.
   And really, Michael Jackson is a more fitting aspiration for the similarly sexless would-be-former teen heartthrob, who’s compared himself to the late King Of Pop (perhaps a bit prematurely) on several occasions and sings in a Jackson-like croon over a sample of “We’ve Got A Good Thing Going” on Believe’s “Die In Your Arms.” 26 June 2012, Genevieve Koski, “Music: Reviews: Justin Bieber: Believe”, in The A.V. Club, archived from the original on 2020-08-06