I have a suggestion that you might try out
@Lon1934 It is random but when I considered your hearing loss...
Can you read sheet music or learn? I have the ability to "hear" music without it being actually played. Reading song lyrics for example. Or a statement that someone made or a thought. Usually only when I'm incredibly bored.
It's been ages since I've read music and since I have only sung I'm limited to that and songs I already know at present or hymns but if your memory is still reasonable (and indeed this could be good exercise) I'd consider some variation along these lines if that sounds like something you'd be interested in.
I take a lot of pleasure in silent practices of this type. It will require a bit of learning on my part and I don't know for sure, but it seems to make sense that I could fill in memory gaps with visual source material.
I can definitely do it with films muted like remembering forgotten parts of the score based off the visual but since most films don't exactly present the best spiritual mood (more of a fleshly meditative state) I don't do that anymore.
So it seems it can be done. Take for instance William tell overture. I just clocked what I recall with reasonable accuracy and it's about 25 seconds...it makes sense that understanding the written music it may be possible to "recreate" it. With some flaws probably, but quite an intriguing memory exercise, correcting flaws and acquiring mental source material not bound by physical hearing.
The issue of course is the effort required. Instead of simply dining on music and being served...you have to cook the meal yourself...every time, but at least the cooking utensils may be viable. Personal music box, only organic batteries required
I decided to just check and see if my memory was accurate. As far as I can tell yes, and then just hearing the rest I could predict it a solid second beforehand (without getting in the way of enjoyment) as a sort of game. You also have the conductor giving clues and the instruments themselves in videos. I usually listen non-visually though.
My experience with elderly people is they can be pretty set in "what is" and not too open to change and it has to be done in baby steps (if at all) but perhaps you may find this of use.