What does "Rarity Index" mean?
The rarity index is a numerical representation of how rare a certain song, or show is. Rarity values for each song are calculated by counting how many times the song has been played since the debut of it, and then dividing that number by the amount of shows that have been played since its debut. Then, the result is multiplied by 100, to simulate a percentage. For example:
At the time of writing this, Where Are You Going has been played at about 85% of the shows since it has debuted. Therefore it's rarity index would be around 85. The higher the rarity index, the less rare it is. Lower percentages mean that the song is more rare.
For a show, we simply take all the songs played at that show, add up their rarity indicies and divide by the number of songs that were played, and there's your rarity index for the show. Your personal rarity index is calculated by taking all the shows you've been to, add up their indicies, and divide that by the number of shows you've attended.
Simply put, the lower the number, the more rare the song/show is.
