A record chart is like a really cool way of keeping track of which songs are the most popular at a certain time. It's like a big list that shows which songs are super popular and getting played the most on the radio, on TV, or even in stores.
It's kind of like a race to see which song can be the most popular and make it to the top of the chart! The songs that are played the most and have the most people excited about them move up the chart, while other songs that don't get as much attention fall down the list.
So, when you hear people talking about the "top 40 songs" or the "Billboard charts," they're really just talking about these super important lists that measure how popular songs are. It's like a friendly competition between all the songs to see which one can be the most popular - and people love looking at these charts to see who's winning!