DJ Spooky is one of the seminal DJs and visionaries of recent history. He pioneered years ago what is now a dominant music genre in our day. I listened to him growing up as a teen kicking around New York streets back in the day and it is no surprise that he is still influencing and innovating in the 21 century. This song, Check Your Math, was mixed on his iPad using his app ( http://bit.ly/baF9m4 ) and accompanied by young masters of live sound Jake Taylor on cello and Patti Kilroy on violin. Enjoy.