Thanks to new rules, any single can make it into the charts - which means lots of songs which went away a long time ago have another shot at number one.
And at the moment there are campaigns to get two tunes with a Doctor Who connection into the top 40.
Love Don't Roam featured in the Christmas special of the sci-fi show, and Who fans want to see it in the charts.
And DJ Chris Moyles is trying to get Honey to the Bee into the top spot.
It's by Billie Piper, who used to play the Doctor's companion Rose.
But which one would you buy?