SUPANTHA MUKHERJEE and KENNETH LI SPOTIFY said on Monday it would launch in 85 new markets in the next few days which will make the music streaming service available to more than a billion people around the world, sending its shares up 6% to a record high. The company, which started its service more than a decade ago, is currently available in 93 countries and has 345 million monthly active users. New markets include countries across Asia, Africa, Europe and Latin America. "Together these markets represent more than a billion people, with nearly half of them already using the internet,…