The digital consumer intelligence company Brandwatch has just released its annual 50 most Influential People on Twitter list, and coming in at number one is Taylor Swift.

They explain their process by saying, “For this research we used Brandwatch audiences to search for active tweeters with a high influence score. Audiences ranks accounts according to a selection of criteria that, added together, create their influence score.” They add, “This is our measure of how influential an account is over time, based on the level of genuine engagement they are creating. While lots of followers, retweets and replies will help, the more influential the people they engage with, the better the score.”

Their data also discovered that the majority of influential tweeters are musicians; The next most popular category is media personalities. Other celebrities on the list include The Rock, Katy Perry, Nick Jonas, Beyonce, Mariah Carey, and Nicki Minaj.