e tag is
     only meaningful for 6 ticks/division. To get a more accurate view
     of how things work, use the following formula:
                             24 * beats/minute
          divisions/minute = -----------------
                              ticks/division
     Hence divisions/minute range from 24.75 to 6120, eg. to get a value
     of 2000 divisions/minute use 3 ticks/division and 250 beats/minute.
     If multiple "set speed" effects are performed in a single division,
     the ones on highe