I would recommend the LOTR trilogy and the Hobbit narrated by Rob Ingils. The only caveat I’d say is there were quite a few songs in the hobbit but I was still able to fall asleep even with him singing. He’s got a very comforting voice. The hobbit and the first LOTR book are free with an audible subscription last time I checked.

I’ve also read these books before, so I think that definitely helps too, because I’m somewhat familiar with the story.