Modern archaeology suggests that this Indus Valley civilization was destroyed not by Aryan conquerors, but by floods, when the Indus river changed course, perhaps due to earthquakes, in about 1700 b.c.
This Indus Valley is suggested to be destroyed.
Call me old-fashioned for caring, but increased popular music sales typically lead to increased classical or jazz music sales, due mainly to the effect of people feeling compelled to enter a music store and look around to see what's new since they were there to buy Thriller , or the Titanic soundtrack, or whatever got them in the door the last time.