Super Cassettes Industries Private Limited, otherwise known as T-Series, is an Indian music record label and Youtuber. Their Youtube channel is the most subscribed Youtube channel, with 150 million subscribers.
T-Series has famously competed in a race between Pewdiepie on whoever gets 100 million subscribers first, with T-Series inevitably winning.
Hm, T-Series won the battle between Pewdiepie? Well that's a shame for Team Pewdiepie, and a victory for Team T-Series.