So What Is Vintage Music?
It's recorded music that has stood the test of time.
There are only two kinds of music; good and bad. But music does many things; it can entertain, inspire, relax, energize or amuse you. It can make you want to dance or induce you into a reflective trance. It can do one thing very well and do another very badly so how do you decide what is good? What criteria do you use?
When you are talking about recorded music, the best criteria is how well it ages.
Pop music can have a brief moment of glory but vintage music sticks around. Like fine wine (or cheese or a well-crafted instrument) it gets better with age.
Vintage music doesn't have to be old, people are still making it, but nothing separates the good from the bad better than time.