Appointment as member of the Akademie der Künste Berlin (West)
World premiere (June 26) of “Lamento” for soprano and piano (arranged excerpts from “Friede Anno 48” of 1936/37) on the island of Mainau in Lake Constance (soloists: Annelies Kupper and Carl Seemann)
World premiere (May 25) of the Concerto for Viola and Piano at the Tage für Neue Musik in Frankfurt am Main with the Hessian Radio Symphony Orchestra (conductor: Otto Matzerath, viola: Jascha Vleissi and piano: Annemarie Bohne)
World premiere (March 15) of the 7th Symphony in Hamburg with the North German Radio Symphony Orchestra (conductor: Hans Schmidt-Isserstedt)
Ludwig-Spohr-Prize of the city of Braunschweig; new version of the “Concerto funebre” in gratitude, its first performance takes place at the Braunschweig Festival of New Chamber Music on November 12 in the same year
World premiere (January 25) of the 8th Symphony in Cologne by the WDR Symphony Orchestra (conductor: Rafael Kubelik)
Performances of the 8th Symphony at the Venice Biennale, the IGNM Festival in Amsterdam, the International Summer Courses for New Music in Darmstadt and at the Berliner Festwochen
World premiere of the ballet “Triptychon” by Heinz Rosen after the 7th Symphony during the opening ceremony of the rebuilt National Theatre in Munich
Scenic premiere (October 20) of “Simplicius Simplicissimus” in Cologne (conductor: Richard Kraus, production: Erich Bormann and stage: Walter Gondolf)
World premiere of the “Konzert für Bläserensemble und Kontrabässe” [Concerto for Wind Ensemble and Double Basses], intermediate stage to the 5th Symphony, in Zurich by Hermann Scherchen
World premiere of the 2nd string quartet in Milan by the Végh-Quartett
World premiere of the “Tanzsuite für Bläserquintett” [Dance Suite for Wind Quintet] and the “Burleske Musik für Bläser, Schlagzeug und Klavier” [Burlesque Music for Wind, Percussion and Piano] at the concerts of the Munich Artists’ Association “Die Juryfreien e.V.”, for which Hartmann was responsible
World premiere of the 1st piano sonata, the “Kleines Konzert für Streichquartett und Schlagzeug” [Little Concerto for String Quartet and Percussion], the Sonatina for piano and the Toccata variata at the concerts of the Munich Artists’ Association “Die Juryfreien e.V.”