A. Muller is an emerging voice in contemporary jazz arranging, contributing two distinctive charts to the band's library. Muller's style often blends sophisticated harmonic structures with a deep respect for the swing tradition, creating arrangements that are both fresh and familiar. Their background in classical theory, combined with a passion for improvisational music, informs their meticulous yet vibrant approach. Muller's work enriches the band's repertoire by offering nuanced interpretations of jazz standards and original compositions.