While sketching I'll listen to non-invasive ambient music. I don't like to be distracted when trying to generate ideas or figure out a pose. But when i start line work I'll listen to podcasts or livestreams to keep myself entertained whilst going through the process.
Some great ambient picks:
Mort Garson's Plantasia is a great synth ambient album.
The Sweet Enoughs have an album called Marshmallow which is super chill.
Vangelis' Blade Runner original soundtrack is Goated
Alabaster DePlume has an instrumental album called To Cy & Lee if you like saxophone
CZARFACE have a couple instrumental albums which are basically beat CD's, see Double Dose of Danger
Of course theres Minecraft Alpha by C418 which is a great nostalgic listen for me.