Can anybody suggest a treatment for large glass windows in a room that's going to have a piano and amplified guitars? Its our den. Kid plays classical piano; Spouse plays in a band in his spare time; I have a pretty serious Hi-Fi habit. 50 sqm, 11ft ceiling, hardwood floors. 2 windows, both 10 ft W x 8 ft H, with smaller windows above them. Double glass sliding doors in the same room, also 10 x 8ft. Had looked at double honeycomb shades under thermal insulated acoustic curtains, but the cheapest shades are 750 per sq.foot. A bit much. I don't know about using Roman shades instead under the acoustic curtains-- but do we have the acoustic materials for a custom job? The curtains can be imported in a set size, but the shades have to be customized. I looked at Audimute, but they are too cumbersome to deploy. A more palatable version of mass loaded vinyl product would be great, but can't find any. Any ideas or referrals would be most welcome!