(make-music
  'SequentialMusic
  'elements
  (list (make-music
          'NoteEvent
          'duration
          (ly:make-duration 0 0 1 1)
          'pitch
          (ly:make-pitch -1 0 0))
        (make-music
          'SequentialMusic
          'elements
          (list (make-music
                  'ContextSpeccedMusic
                  'context-type
                  'Timing
                  'element
                  (make-music
                    'PropertySet
                    'value
                    #f
                    'symbol
                    'timing))
                (make-music
                  'ContextSpeccedMusic
                  'context-type
                  'Timing
                  'element
                  (make-music
                    'PropertySet
                    'value
                    #f
                    'symbol
                    'autoBeaming))))
        (make-music
          'NoteEvent
          'duration
          (ly:make-duration 0 0 1 1)
          'pitch
          (ly:make-pitch -1 1 0))
        (make-music
          'NoteEvent
          'duration
          (ly:make-duration 0 0 1 1)
          'pitch
          (ly:make-pitch -1 2 0))
        (make-music
          'SequentialMusic
          'elements
          (list (make-music
                  'ContextSpeccedMusic
                  'context-type
                  'Timing
                  'element
                  (make-music
                    'PropertySet
                    'value
                    #t
                    'symbol
                    'timing))
                (make-music
                  'ContextSpeccedMusic
                  'context-type
                  'Timing
                  'element
                  (make-music
                    'PropertySet
                    'value
                    (ly:make-moment 0 1 0 1)
                    'symbol
                    'measurePosition))
                (make-music
                  'ContextSpeccedMusic
                  'context-type
                  'Timing
                  'element
                  (make-music
                    'PropertySet
                    'value
                    #t
                    'symbol
                    'autoBeaming))))
        (make-music
          'NoteEvent
          'duration
          (ly:make-duration 0 0 1 1)
          'pitch
          (ly:make-pitch -1 3 0))))