After making a historic speech at the UN General Assembly earlier this week,... BTS performed live on ABC's 'Good Morning America' on Wednesday.<br /> Calling them 'one of the biggest boy bands in the world',... the 7-member group made a splash on the hit show.<br />The group greeted a screaming crowd,... as they performed live.<br />During the interview part of the show,... RM,... the leader of the group called his speech at the UN the 'best moment' of his life. <br />
