I'd like to hear a 100-year contrast. I wish to listen to the top-charting hits of 1914 just to hear how different they were from the top-charting hits of this year. Thanks.
This is a bit of a toughie, because the Billboard charts don't start in their modern format (singles sales) until the 1940s! But they did apparently start irregularly publishing top-selling sheet music stats in 1913, which someone has compiled into a "top of the pops" sheet for 1914 here. Nothing really recognizable here!
I think /r/music would help you more.