AC/DC used bagpipes in one of their most famous songs, "It's A Long Way To The Top (If You Wanna Rock 'N' Roll), but they probably never envisioned one of their songs being played by a bagpipe pipe.  But that's exactly what happened when Spanish band, Rondalla de Santa Eulalia de Mos, performed "Thunderstruck" recently.  The video of the performance has since gone viral.