Eurobeat Brony is by far the best band for Electronic Pony Music.
Some examples
Discord ( The Living Tombstone Mix )
http://www.youtube.com/watch?v=xPfMb50dsOk
The Flim Flam Brothers
http://www.youtube.com/watch?v=DcWE8o4024U
Luna ( Dream Mode )
http://www.youtube.com/watch?v=bn7uMwXYU9U
Some examples
Discord ( The Living Tombstone Mix )
http://www.youtube.com/watch?v=xPfMb50dsOk
The Flim Flam Brothers
http://www.youtube.com/watch?v=DcWE8o4024U
Luna ( Dream Mode )
http://www.youtube.com/watch?v=bn7uMwXYU9U
SPAAAAAAAAAAAAAAACCCCEEEEE