In 1946, Monteux conducted the San Francisco Symphony in the premiere of Bloomfield's transcription of Bach’s Toccata and Fugue in C major.
Artur Rodzinski conducted the New York Philharmonic premiere of Bloomfield’s Toccata and Fugue transcription on October 3, 1946.
Olin Downes review stated “This is a sound job, one free from oversimplification or the sensational effects in which so many modern transcriptions indulge.
His first conducting experience was with the New York Little Symphony Orchestra at Carnegie Chamber Music Hall on December 21, 1945.
This was in New York City with a student chamber orchestra from the Juilliard School at an all-Ives concert held at the McMillin Theatre at Columbia University.
Prominent artists he invited to Portland included the pianists Artur Rubinstein and Rudolf Serkin, sopranos Birgit Nilsson and Elisabeth Schwarzkopf, and violinist Isaac Stern.
In December 1961 he conducted for the first Dimitri Mitropoulos Music Competition in New York, serving as a last minute substitute for Josef Krips.
New York Times critic Harold C. Schonberg praised him for handling “his young soloists flawlessly, working closely with them and seeing to it that their tempos and phrasings were accurately followed.
He served as a judge for the Leventritt Prize in May 1962 and also for the first U.S.-based international conducting competition held in New York in March 1963.
Theodore Bloomfield’s final conducting engagement was with the Oregon Symphony in 1996, at a concert during the orchestra’s centennial season.