While he is most famously remembered as the mentor of Canadian pianist Glenn Gould, García influenced several generations of musicians through his many years of teaching at the Toronto Conservatory of Music.

[1] His brother Eduardo became a music critic and Alberto contributed articles and reviews to the newspaper El diario ilustrado.

Guerrero introduced Chilean audiences to the modern music of his day, including works by Debussy, Ravel, Cyril Scott, Scriabin, and Schoenberg.

As one of Canada's most active pianists, he played regular radio recitals (a highly innovative move at the time) beginning in the mid-1920s and through to the early 1950s.

In addition to a number of chamber works and piano solos, he wrote music for 4 or 5 operettas and zarzuelas (now lost) which were produced in Chile between 1908 and 1915.

What follows is an incomplete list: An archive collection of Guerrero's manuscripts and papers is located at the University of Toronto Music Library.