I'm severely hearing impaired and enjoy going to dance classes - swing, salsa, etc. If I'm standing still, I can easily tune into the beat. But once I start moving, I quickly lose it on many songs; dance studios aren't known for having large sound systems with substantial bass. I don't know that this specific setup would fix anything -- it would need some way of syncing to the instructor's iPhone that is connected via bluetooth to the studio's little portable speaker. But it's a step in the right direction.

While on the topic, I can hear music but almost never understand lyrics; at best I might catch the key chorus phrase (example: the words "born in the USA" are literally the only words I understand in that song).

A few months ago I discovered the "karaoke" feature on Apple Music, in which it displays the lyrics in time with the music. This have been game changing for me. I'm catching up on decades worth of music where I never had any idea what the lyrics are (filthy, that's what they are. So many songs about sex!). It has made exercising on the treadmill, elliptical, etc actually enjoyable.