Soul of Varisu is one of the S. Thaman composed songs from actor Vijay's upcoming Varisu and it released as a third single from the movie. This KS Chithra sung number has now topped Billboard's weekly list of hot trending songs from all over the world. 

K.S. Chithra's "Soul of Varisu" reaches No. 1 on the #HotTrendingSongs Powered by @Twitter chart, while Stray Kids claims 6 spots in the top 10. #BillboardNews pic.twitter.com/yDuX4l2u76

— billboard (@billboard) December 28, 2022

The #HotTrendingSongs Powered by @Twitter top 10 (chart dated Dec. 31, 2022).

Details here: https://t.co/rxtgQDrp1y pic.twitter.com/llNhqONSQH

— billboard charts (@billboardcharts) December 28, 2022

Penske Media Corporation owned Billboard is an American music and entertainment magazine and has been widely viewed as the most popular metric of music for decades. In October 2021, they came up with a metric called 'Hot Trending Songs Powered by Twitter' [currently sponsored by Xfinity Mobile]. This metric of ranking music captures every Friday to Thursday the velocity of conversation around global music in addition to the volume and real-time views. 

#SoulOfVarisu @billboard 🥁⭐️🤍 https://t.co/rc8JahlWvb

— thaman S (@MusicThaman) December 28, 2022

And every Tuesday, Billboard ranks the top 20-position capturing songs based on these weekly activities.  On the hot trending songs chart dated December 31, 2022, Soul of Varisu has occupied the No: 1 position while 2 till 10 are occupied by international pop-star acts. Soul of Varisu is the only Tamil/Indian song on this list, while 8 are Korean songs and 1 is an American song.