dulcet tones 

A sound or voice so gorgeous you just have to listen to it again and again no matter what.

So recognisable that even the faintest hint of it in the distance can send your mind reeling.

"i wish i could speak to her again jus to hear those dulcet tones" see Ismay Collins

dulcet tones by Annon March 9, 2005

dulcet tones 

Soothing creaky dulcet tones are sounds that can put you to sleep, like those on the Sleep With Me Podcast

"Creaky Dulcet Tones"

Scooter - SleepwithmePodcast.com

dulcet tones by Oldmucker4578 May 23, 2017