One of the problems is that we hear through more than just our ear canals. Talking with earplugs in is weird, because you can hear more through your head than through the air. Also playing a wind instrument is REALLY WEIRD. Foam high noise reduction Earplugs also really attenuate the high frequencies most of all. The "hi-fi" earplugs do a much better job. I honestly found that going to rock concerts with the earplugs in sounded BETTER as it wasn't all just white noise.I have trouble tuning, when I use ear plugs. We just found ways to lower the stage volume and still have a good mix. There's no substitute for open ears. Ear plugs just lower the volume, for the most part.