Youtube Music Ratings is a free Chrome extension developed by Tomás Raiti. This handy add-on falls under the category of Browsers and specifically Add-ons & Tools. With Youtube Music Ratings, you can easily find out which song is the most popular within an album or public playlist based on community listenings.

One of the standout features of this extension is that it displays the song's popularity right next to its name. This allows you to quickly identify the most popular tracks in your playlist without any hassle.

What sets Youtube Music Ratings apart is its highly customizable settings. You have the option to choose the scale used to calculate the ratings, as well as the emoji or character used to represent the results. Additionally, advanced settings allow you to use a personal Youtube v3 API key for enhanced functionality.

A small but useful detail is that you can hover over the ratings to see the number of listens each song has. This provides valuable insights into the popularity of individual tracks.

It's worth noting that the original idea for this extension came from the now discontinued Google Play Music store.

However, there are a couple of known bugs with Youtube Music Ratings. Going back in your history feed doesn't re-add the stats, and if a playlist contains over forty-ish elements, Youtube Music might not render all the songs at once, causing the extension to not add ratings for those songs. Despite these visual bugs, the ratings that do work are mathematically accurate.

Overall, Youtube Music Ratings is a useful and customizable Chrome extension that allows you to easily identify the most popular songs in your playlist based on community listenings.