Youtubeko deskribapena:
Mexican Composer Carlos Chávez was asked by William F. Cramer to compose a concerto for Trombone. He finished it in 1977 and it was premiered by Per Brevig at Kennedy Center, Washington DC conducted by the composer at the age of 78 and three months before his death due to Cancer.
Painting: ¨Fuerza Natural¨ by David Alfaro Siqueiros (1896 -1974)