When you're facing a crowd that's been sitting for three and a half hours, you might as well get everyone up and dancing. Leikeli47 was the ninth and final Tiny Desk Family Hour act to take the stage at Austin's Central Presbyterian Church during SXSW last week. So naturally, the charismatic, genre-smashing masked rapper closed NPR Music's big night with as much intensity, joy and free-wheeling fervor as the moment required.