Do you remember waking up and knowing it was Sunday morning because you would roll over, push the on button on your radio and there was Casey Kasem saying, "Now, on with the countdown." Where was your favorite song going to end up? Did Madonna make it to number one again?

Casey Kasem's American Top 40, all the original countdowns from the '70s and '80s, return to the air on XM, only this time with no commercials.

"Keep your feet on the ground and keep reaching for the stars".