I hold a lot of sheet music on my Kindle but its the simpler stuff: about the notational complexity of the things in the DT. I wouldn't want to hold four part choral music in it, for example. Since it supports PDF it is quite easy to put in, but its a good idea to hold each piece separately or in small groups; the search facilities are adequate for books but seem to be very slow when searching through a 500-page music collection.