quiet classical music

Look for a chamber music playlist/collection in whatever service you use. 

Chopin Nocturnes 

Nocturnes by Irish composer John Field.

Philips Records has put out several compilations for reading, such as "Bach for Book Lovers" - "Beethoven for Book Lovers" and "Mozart for Meditation". 

Any compilation of Adagios.

All of these are slower, quieter pieces.

Hello kgveteran!  String Quartets.

tj5844,

Good suggestion. I might give that a try depending on the material.

Sometimes certain albums go well with certain genres.

For example if I'm reading superhero comics eg Frank Miller, 60s/70s Marvel etc then something like Simon and Garfunkel's Tales of New York provides great accompaniment.

Normally words are usually a huge distraction.

Wasn't Mozart once touted as an aid to study?