He wrote a number of other chamber works, and a handful of things for orchestra, including Broadway, which was performed by the Boston Symphony in the 1929-30 season.

[2] Gardner made his New York debut in 1913, played 2nd violin in the Kneisel Quartet from 1914 to 1915, performed with the Chicago Symphony (several times as soloist) in 1915, and toured with the Elshuco Trio in 1916 and 1917.

[1] In addition to solo recitals, Gardner appeared as soloist with the New York Philharmonic under Josef Stránský and Willem Mengelberg, with the Philadelphia Orchestra under Leopold Stokowski, with the St. Louis, Chicago, and Los Angeles Symphonies, and in Germany and Holland.

[2] Gardner published a number of pedagogical works which include a method for violin and his Harmonic Thinking school of string playing.

[1] Gardner's conducting appearances included the premiere of his symphonic poem New Russia in 1921 with the Philadelphia Orchestra and the first performance of his Broadway (1924) with the Boston Symphony in 1930.