If you look at a record under a microscope, the high frequencies are short jagged edges... and the low frequencies are long swinging ones are deep bass sounds. When it cut it at half speed, you're getting more of those on the record.
“My favorite day was Monday, September the 25th, 2006. New Orleans, Louisiana, site of the Superdome. I watched our people who had suffered so grievously through Hurricane Katrina fill a stadium hours before a game and stay hours after the game.”