Indoor FM antenna

It depends. If the radio stations you want to hear are close enough, a simple indoor antenna might provide enough level. Usually an indoor antenna can be oriented so that it is directional, which might help if you have multipath issues.

If an indoor antenna doesn’t work, is there a chance you could install an outdoor antenna, but put it in the attic? That sometimes is a good compromise.

You might try a 1/2 wave antenna. I use one effectively (in my attic). You might be able to use one in your music room but you probably can’t hide it. You can use it vertically as an omni or horizontially pointed at the station you listen to mostly. Magnum makes one, model ST-2. Not cheap but it works. Others may be available.

Thanks. 
I have only a g-type connector, so I need the co-ax termination on the antenna. I tried the antenna I have at various heights and orientations and no joy. I'm attempting to tune an HD2 signal, so it's all or nothing.
I have no access to the crawl space above my living area, so an attic mount is not possible. 
I thank you for your thoughtful response. I think I'll try the Magnum Dynalabs st-2 inside, having no tree to hang it in nearer than 100 ft. . If that doesn't work, I suppose I could have Guido and Eddie speak more forcefully with the board,.