Uncharted

is the sixth studio album by YouTube sensations . It features eight new songs in addition to their previously posted mash-ups "Fight Song/Amazing Grace," "The Jungle Book/Sarabande," and the - track "Hello/Lacrimosa." Their version of 's "A Sky Full of Stars" had also been posted previously. Of note among the new tracks, the original song "Tour de France" by collective member skips the EDM beats and electronic additives of the title track, opting instead for solo piano, and "Okay" was provided by Hot 100 alums and . ( did indeed chart, marking their sixth straight number one on Billboard's New Age Albums chart.) ~ Marcy Donelson