The years may roll by but we don't really change inside that much. Nothing rings truer than our tastes in music... I've met lots of people over the years and for most their music tastes remain anchored to a time in their life.
For many it is their teen and early adult years... I'm also testament to the stereotype. Whilst my tastes are broader than some... listening to 8 hours of music a day tends to expose you to mix of music.
Music may indeed be frozen in time for many, but the way they obtain it has undergone a revolution. When I was a teenager, a record store would sell 45's to cater for the buyer who wanted to purchase a single song.