Where you can go when you listen

Imagine this: a long dead relative, maybe one you never met, leaves behind a recording. The sound is of them having a cup of tea in silence. They perhaps, do not realise they are being recorded. The recording captures sounds like their teeth on the rim of the cup, a creak from an armchair, a breath.

I would give so much to have a recording like that, of my grandmother. I never met her though my family say I am like her reincarnation. I have one of her jackets and two photos of her (one of which is a photograph of a passport photo). I want to hear what she sounded like, just breathing or moving about.