Guest soloists with the orchestra have included pianists Dimitri Bashkirov, Julius Katchen, and Rudolf Kerer; violinists Ivry Gitlis, Gidon Kremer, Yehudi Menuhin, Vladimir Spivakov, and Josef Suk; and cellists Miloš Sádlo and Daniil Shafran.
He also played matches with celebrities such as the tennis player Bobby Riggs (1948) and the concert pianist Julius Katchen (1955).
Beethoven: Piano Concertos Nos. 3-5, Piero Gamba conducts the London Symphony Orchestra, and Julius Katchen (Audio CD 1996)
Julius Caesar | Pope Julius II | William Julius Wilson | Julius Caesar (play) | Julius Rudel | John Julius Angerstein | Julius Francis | Julius | Julius Hemphill | Julius Wellhausen | Julius von Pflugk-Harttung | Julius Rosenwald | Julius Nyerere | Julius Erving | Julius Baker | Julius and Ethel Rosenberg | Otto Julius Bierbaum | Julius Wernher | Julius Weise | Julius Streicher | Julius Sachs | Julius Peppers | Julius Oppert | Julius Katchen | Julius Evola | Julius Caesar Scaliger | Johann Friedrich Julius Schmidt | Drusus Julius Caesar | Pope Julius III | Pope Julius I |
He nonetheless continued to make recordings, such as Ernesto Hallfter's Sinfonietta, De Falla's Nights in the Gardens of Spain with Gonzalo Soriano, work with the OSR, and later in London, the stereo orchestral LP Espana, as well as the Tchaikovsky Violin Concerto with Alfredo Campoli and Liszt concertos with Julius Katchen.