SUBSCRIBE: \r<br>\r<br>The evolution of the Dark Knight, told through a piano and a cello.\r<br>\r<br>This is track 7 of 13 from The Piano Guys third album, Wonders.\r<br>\r<br>I do not own the rights to this song. All rights belong to The Piano Guys.\r<br>\r<br>ThePianoGuys:
