Dancing Spheros!!

How awesome is this use of music and tecnhology?!! This is a goal that I have for some of my 5th grade classrooms.  We have played with coding sphero to "dance" to music, but putting a whole class together to choreograph a classic piece of music is AMAZING!! 

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I wonder how this was done?  Did they code each sphero to change at the right times, or did the use an ipad to remotely control them?   Either would help my learners listen for musical form and bring up great discussions about how to show those forms through light and motion.