Today with so much music under the bridge its hard to younger people to determine what is new and where did it come from.
Yep, and that's a big part of the story with Spector. His claim to fame is understood from the perspective of historical context, not from the perspective of audiophilia. Folks like the OP or your daughter for whom the early 60s are nothing but ancient history may find it more difficult to understand just how radical the wall of sound was at the time. Not only in sound, but in concept and technique. The most radical icon in pop music at the time was Elvis, who at the time wasn't really doing much different production-wise than Bing Crosby and the Kingston Trio were. Sure there were technical differences in the mix layout between them, but nothing that really wrote any radically new textbooks.
When the wall came along, it turned standard documentarian technique on it's ear. And it happened at the start of one of the most turbulent social decades of the century, where anti-establishmentarinism and an anything goes attitude really took root. By the late sixties when "Let It Be" came along, Spector was already somewhat of a one trick pony, and others (like Martin and Wilson and others) had already taken the radical seeds he planted several years earlier and developed them even further, somewhat obsoleting Spector in real time.
But, the seeds were still Spector's, and that's why he has the place in history that he does.
What I will give young people like your daughter and the OP much credit for, though, is the fact that they are even interested in music that happened a quarter century before they were even born. That's like folks my age being into Ellington, Basie, etc. Now, I happen to be way into that stuff myself, but the number of people my age who are as educated on V-discs as the 20-somethings of today are on the music of the 60s is relatively puny in comparison.
G.