Modlin, an American jazz arranger active from the mid-20th century, significantly shaped the sound of big band jazz with his innovative harmonic voicings and intricate counterpoint. His style, characterized by lush orchestrations and a sophisticated blend of swing and modern jazz elements, graced the stages of numerous renowned ensembles. Modlin's notable contributions include arrangements for Count Basie's orchestra and collaborations with vocalists like Ella Fitzgerald, elevating their performances with his distinctive touch. His charts, often featuring unexpected melodic twists and rich textural layers, pushed the boundaries of traditional big band writing, leaving an indelible mark on jazz band music.