John Williams composed the 'Main titles/Rebel Blockade Runner' from StarWars: Episode IV A New Hope.
The main motif in the piece is associated with Luke Skywalker, making it a leitmotif.
The piece uses repetition and an interval of a 5th (Bb – F).
Major and minor chords are used in root position and first inversion.
The piece uses quartal harmony, which is built up of 4ths rather than 3rds.
The piece uses tritone (Db - G).
Some chords in the piece have added notes which sometimes create dissonance.
The piece starts in BbMajor and remains in this key for the ABA section.
The tonality becomes less clear and unstable as the music follows the action on screen.
Sometimes two keys are present at the same time, creating bitonality.
The use of lots of dissonance sometimes makes it sound atonal (no sense of key).
The piece follows a ternary form (ABA), with the main theme A (Luke Skywalker), Theme B, and main theme A (Luke Skywalker) as the three parts.
The piece is mainly homophonic (melody and accompaniment), with pedal notes and inverted pedal notes used.
The piece has a strong rhythmic feel and pulse, with the use of triplets.
The piece is performed at a fast tempo, with a metre of 4/4 (4 crotchet beats in a bar) and changes to 3/4 (3 crotchet beats in a bar) during the piece.
The piece starts ff (very loud) and has extreme contrast, with the main theme A being loud and Theme B being quiet.