Momentum by Max Marsillo was originally composed as a duet for guitar and marimba. It was inspired by a mix of artists including Koji Kondo, Bronislaw Kaper, and Harrison Belew. Its melodic material was inspired by On Green Dolphin Street and combines groove, syncopation and harmonic progressions which were inspired by Baroque music. Though the piece was inspired by guitar music, it is very idiomatic to the marimba. Momentum comes as a professionally printed and bound score and includes individual parts in PDF format for printing or for tablet viewing.