French Doors

I did the same thing. I had one of those rooms open to everywhere. I had two sets of french doors installed. They work just fine. It was important to me to let light through and also retain the sight line through the house. The doors can be opened all the way to accomodate the open flow through design that was originally intended.

I don't find the sound leakage any greater through the room with the french doors vs the standard hollow core interior doors in other rooms. You don't state if soundproofing that room from the remainder of the house is a priority. I think the french doors are an elegant solution. Check my system for photos.

One more thought on French doors. I built a listening room/study in an attic space in a prior home, and because of lighting issues, wanted to have a French Door to get more light into the space. I solved for the sound problem by having an EXTERNAL french door and frame installed -- one that was intended to be the front door to the house or the back door onto a patio. It was very heavy, insulated, had double-paned glass, and the surrounding door frame was also insulated and had a rubber weather seal. It looked great, but also was a very good sound insulator -- I had no problem with vibration and the sound dampening was very good.

Considering the dimensions of the room, but not knowing the location of the opening, I have to wonder if you really want to put a door there?

I've used double glazed glass windows and they do use thin glass. For a little more money, they will put thicker glass in the window. I would strongly recommend that.

Unsound,
Good point. The room has that single opening on the back of the 13' wall. This is actually the "formal living room" that I will convert into a music room. As you enter the house, it is the first room on your left.
That was one of the reasons for getting a french door. But I am open to various options and ideas.