Will the music of today stand the test of time? If not, why? If so, why?
If the Beatles were a contemporary act and they just finished recording Abbey Road last fall, and it was being released in a month, how would it be accepted? As an example of a massively commercially successful album: if Pink Floyd had progressed through their discography as is (but, they started in the late 90s) and Dark Side of the Moon was being released next month: would it sell more?, less?, the same amount of copies? Would it get the endless radio play it got in today's world?
Has radio been downgraded to oldies stations and really bad popular music? Has the relevance of radio passed the world by? Was it the power of this medium that drove these early works to massive success, or just the sheer greatness of the art: rendering the medium irrelevant? E.g., if Led Zeppelin IV or Purple Rain came out tomorrow, would they eclipse all music of today's era in terms of album sales and credibility?