\score {
  <<
    \new StaffGroup <<
      \AMillionDreamsSoloMellophoneOneScore
      \AMillionDreamsSoloMellophoneTwoScore
    >>
    \new StaffGroup <<
      \AMillionDreamsFluteOnePart
      \AMillionDreamsFluteTwoPart
      \AMillionDreamsClarinetOnePart
      \AMillionDreamsClarinetTwoPart
      \AMillionDreamsBassClarinetPart
      \AMillionDreamsAltoSaxOnePart
      \AMillionDreamsAltoSaxTwoPart
      \AMillionDreamsTenorSaxPart
    >>
    \new StaffGroup <<
      \AMillionDreamsTrumpetOnePart
      \AMillionDreamsTrumpetTwoPart
      \AMillionDreamsMellophonePart
      \AMillionDreamsTromboneOnePart
      \AMillionDreamsTromboneTwoPart
      \AMillionDreamsBaritonePart
      \AMillionDreamsTubaPart
    >>
    \new StaffGroup <<
      \AMillionDreamsPianoPart
      \AMillionDreamsVibraphoneOnePart
      \AMillionDreamsVibraphoneTwoPart
      \AMillionDreamsMarimbaOnePart
      \AMillionDreamsMarimbaTwoPart
      \AMillionDreamsSnarePart
      \AMillionDreamsTenorsPart
      \AMillionDreamsBassesPart
    >>
    \new Dynamics {
      \startMeasureCount
      s1*55
      \stopMeasureCount
    }
    << 
      \amilliondreamsdrillscorepart
    >>
  >>
  \layout {
    indent = #12
    short-indent = .4\cm
    ragged-right = ##t
    \set Score.markFormatter = #format-mark-box-letters
    #(layout-set-staff-size 7)
    \context {
      \Score
      \omit BarNumber
    }
    \context {
      \Dynamics
      \consists #Measure_counter_engraver
      \override MeasureCounter.direction = #DOWN
      \override MeasureCounter.font-encoding = #'latin1
      \override MeasureCounter.font-shape = #'italic
      \override MeasureCounter.font-size = #5
}}}