As an earlier guest said, I think the why is a product of tech and taste.

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I think I've been through some of that before with you, pfr. I'm younger than you (51) and my own "cut off" from following (as opposed to being places where you sometimes hears some things) the charts is probably early 80s.

I'm not sure I undersand the high/low brow music bit. My mother plays classical piano and my father has classical tastes. My parents met queuing for a CBSO concert at the city hall in Birmingham. I was taken to a couple of concerts, eg. John Williams in St Asaph and both John Ogden (piano) and the WNO (doing Barber of Seville) in Llandudo - all of which I enjoyed although the opera probably more for the spectacle and to listen to on recordings, I can have a dislike of "squeaky squaky operatic sopranos!).

All the same, I largely (there have always been things I love) went off classical. What's probbly hardest to discern is how much of my later life at lest becoming more open to it is down to changing tastes and how much is down to my strained relationship with my father. I let things get so bad, (perhaps outside of staying a Norwich City supporter, and enjoying watching cricket... ) I didn't want to like things he liked. Childhood can be a muddle...