If you are really interested in music, you will likely enjoy a variety of styles but also from many generations.
I'm quite familiar with many songs and tunes of the World War One era and even before. Likewise the twenties, thirties and so on right up until the present day. I particularly enjoy the old jazz, blues standards and, of course, folk music from way back too.

So, don't assume that patients or residents are either too young or too old to enjoy or appreciate something. Of course, many people aren't that fussy about music and will only have a superficial interest and, perhaps, just remember a particular era. We should try and cater for everyone though.