The biggest boy band in the world, BTS, talks about the blood, sweat and tears that goes into their creations.

Log On To Our Official Website : http://www.lehren.com

For More Such News & Gossips Subscribe now! : http://bit.ly/2ryGEoG

Lehren On Podcast: https://audioboom.com/channel/lehren

Download The 'Lehren App': https://goo.gl/m2xNRt

Facebook : https://bit.ly/LehrenFacebook

Twitter: https://bit.ly/LehrenTwitter