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
Art Prize of the Bavarian Academy of Fine Arts Munich
World premiere (February 10) of the 3rd Symphony (based on movements from “Sinfonia tragica” and the symphony “Klagegesang”) on Bayerischer Rundfunk (conductor: Erich Schmid)
Invitation from the GDR ministry to become an academician and director of the Academy of Music in East Berlin; Hartmann firmly rejects; he does not allow himself to be swayed by the insistence of Walter Ulbricht, Johannes R. Becher and Robert Havemann
World premiere (September 10) of the 2nd Symphony, a revised version of the Adagio from the “Symphonische Suite ‘Vita nova'” of 1943, at the Donaueschinger Musiktage with the Symphony Orchestra of the Südwestfunk (conductor: Hans Rosbaud)
Performance of the 4th Symphony at the IGNM festival in Brussels (conductor: Hermann Scherchen)
World premiere (April 21) of the 5th Symphony (“Symphonie concertante”) in its final version in Stuttgart with the Südfunk Symphony Orchestra (conductor: Hans Müller-Kray); preliminary stages of the symphony: “Concerto für Solo-Trompete und Bläser-Kammerorchester” [Concerto for solo trumpet and wind chamber orchestra], premiered in Strasbourg in 1932, and “Konzert für Bläserensemble, Kontrabässe und zwei Solotrompeten” [Concerto for wind ensemble, double basses and two solo trumpets], premiered in Zurich in 1949
Performance of the 3rd Symphony at the IGNM-Fest in Frankfurt am Main
Performance of the 4th Symphony at the Wiener Festwochen
World premiere (April 24) of the 6th Symphony (adapted from “Symphonie L’Œuvre” of 1938; finally only Adagio taken over in revised form, 2nd movement “Toccata variata” newly composed) in the Munich musica viva concert with the Bavarian Radio Symphony Orchestra conducted by Eugen Jochum
World premiere (October 10) of the “Konzert für Klavier, Bläser und Schlagzeug” [Concerto for Piano, Wind and Percussion] at the Donaueschinger Musiktage with the Symphony Orchestra of the Südwestfunk (conductor: Hans Rosbaud, soloist: Maria Bergmann)
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