Global group BTS performs a set that includes some tracks from "BE," plus a few surprises.

Icons Tony Bennett and Lady Gaga swing it on a selection of classic Cole Porter duets from their six-time Grammy-nominated album, "Love for Sale.

Bastille took to London’s Porchester Hall to record an intimate one-off show for MTV UnPlugged. With the help of their touring member and frequent collaborator, Charlie Barnes. Bastille put together songs that surprised, as well as immensely pleased, their fans.