MadreInglese this is exactly the sort of thing I need for this thread! Would it be OK if I added it to the others for my collection? Don't worry if not.
Anyway you could try all the Debussy Piano Preludes - there are 2 sets which should keep you going for a while.
I quite like baroque music on in the background - any instrumental Bach whether on keboard or orchestral would be ideal for studying I think. Try the Goldberg Variations played on a piano (as opposed to harpsichord which might be a bit too much in the foreground as it's quite an insistent sound.)