Tacks are to be inserted into each hammer at the striking point so as to create a pseudo-harpsichord sound. Either an upright piano or a grand piano may be used.
Accidentals apply only to the note immediately following.
Cautionary accidentals are enclosed in parentheses. Phrase marks, at times, intentionally stretch to or from rests indicating a sustaining of the notes for their fullest possible value. Harrison intends the stress patterns and groupings created by the legato marks in the first two statements of the right hand motive to apply to each statement of this gesture. The composer requires that the piano be tuned according to the following procedure.