Nick Quah

White noise streams are a kind of sonic wallpaper. For many, they help keep some parts of the brain distracted so that other parts may better focus on things, like writing, studying or sleeping.

The podcast world is abundant with shows about reality TV. Now a few podcasts are trying to capitalize on reality TV popularity more directly, by emulating the genre's conceits, mechanics and style.

Critic Nick Quah says the streaming giant's foray into the music podcast field has been pleasantly experimental, with casual, compelling shows that sound lo-fi and intimate.