The cache is not located at the posted coordinates.
There were certainly lots of great songs in the last part of the 20th century. So many number one hits, year after year, in such a variety of styles. Makes me wish I had been born 40 years earlier!
Lots of muggles zooming by here, so use stealth! (Might even want to try at night, for a little less exposure.)
You can check your answers for this puzzle on Geochecker.com.
Congrats to Team Sydnes for early-morning FTF!
NOTE: The original cache was muggled. See hint for new location nearby.