John Williams In Session shines a light on the remarkable early career of the future film-music giant as one of Los Angeles’ most sought-after studio pianists. Long before Star Wars, Jaws, E.T. and countless other landmark scores, Williams was building a formidable reputation as a versatile session musician, bringing his distinctive touch to jazz, pop, soundtrack and rock ’n’ roll recordings throughout the late 1950s and early 1960s.

Drawing from recordings made between 1956 and 1961, this collection captures Williams working alongside an extraordinary range of artists, including Harry Belafonte, Frank Sinatra, Carmen McRae, Anita O’Day, Henry Mancini, Les Baxter, The Four Freshmen, and Marilyn Monroe. Among the many highlights are the instantly recognisable piano riff on Peter Gunn Theme, the chart-topping novelty hit Purple People Eater, and superb performances spanning exotica, swing, ballads, cool jazz, and big band sounds.

The compilation also traces Williams’ rapid development from Juilliard-trained pianist to arranger, conductor, and emerging composer, revealing the depth of experience that would later inform some of the most celebrated film scores ever written. His work alongside leading arrangers and performers of the era helped shape the musical voice that would soon become known worldwide.

John Williams In Session is a fascinating portrait of a master musician in his formative years, capturing the talent, versatility, and professionalism that laid the foundations for an extraordinary career.