My son plays the saxophone and practices every night. The sound of a live instrument playing solo in the house is far different from having the radio on--it has much more resonance.
My best idea so far would be to have my son give the pup a rawhide (so her mouth is busy and less likely to bark) and keep an eye on her while softly playing scales for a few minutes, then remove the rawhide after he was done playing, so that the playing was associated with the rawhide fun and keeping the mouth busy. Then he could slowly work up the time and volume.
Are there better ideas or any direct experience with this kind of situation? Would it be best to start with low scales?