Conservatory

This will be a music conservatory and library where my kids can practice and preform their instruments: the piano and chello. I'd like some built in shelving for books because I love literature, but not too much because I want it to be a room where we can also display nice artwork we collect. Not sure if we need one set of french doors that open to the Great Room, or two sets that open up. Want to be able to close it off well to little kids but open it up to parties, guests, recitals when needed.