Edit: How does everyone sort books out when they have a lot of them?

Various folders, sorts by instrument, and then by how likely I am to use them. Sheet music folders...ah but it gets messed up So easily

I have piles of them all over my room and in my wardrobe and under the bed and in bags and in the piano room...and the key to finding stuff is knowing that it lies in time layers - most recently used at the top; really old at the bottom. It's a bit like carbon dating.

You'll find some people's ideas here - I have ended up with a system of box files on a shelf, which seems to work well even if it only deals with flute music and little else!

Am fortunate enough to have 2 music cabinets with drawers that have drop-down fronts to them, so you can see at a glance what is in there. I try to srt things alphabetically, but still always end up with a pile of music that is "to be put away" !!

hahahahha piles upon messy piles

funny as all my cds are in alphabetical order

As far as my needs for the piano grades go, I have a tall-boy (chest of drawers type-of-thing) which has four main drawers - one for each pair of grades: lowest one is for I-II etc.

LR

My piano is in the dining room, next to some built in bookshelves, so in a fit of tidiness I took out two shelves worth of books and replaced them with music - one pile of theory, one for duets, one for my daughter's, and other categories roughly by century.
Needless to say within a short time the scores were in back disorganized piles on top of the piano, on the dining room table, floor etc.
Meanwhile, the piles of books remain on the floor as a sort of assault course around the room.
To make matters worse, the children never shut the door and the parrot gets in and bites chunks out of the scores, so sometimes it's 'guess the note' as iwhat the composer wrote has been bitten out!