When it comes to music, everyone wants to be at the top of the charts. This means that a particular song or album is the most popular and is being listened to by the most number of people. However, using the same phrase over and over again can be boring, so here are some synonyms for "top of the charts" that can be used instead: number one, bestseller, top-selling, chart-topping, highest-ranking, most popular, leading, number-one hit, top-rated, and top-spot. Using these synonyms can add some variety to your writing or speech and make it more interesting to and engaging for your audience.