He would continue his studies with Bloch in Roveredo Capriasca, Switzerland in 1932, and with Hugo Leichtentritt in Berlin, Germany, in 1933.
The following year, he was appointed professor and chairman of the music department at the University of Utah, a position he held until 1962.
Robertson was instrumental in the promotion of the Utah Symphony and of classical music in Salt Lake City.
The setting of the Lord's Prayer from that oratorio was recorded by the Mormon Tabernacle Choir and released as a 45 single on the flip side of the Battle Hymn of the Republic, which hit the top 50 charts.
Among Robertson's works in the 1948 hymnal of the Church of Jesus Christ of Latter-day Saints was the music for "Up!