Who is the composer of the studio album "on the rock" and a Grammy award winner?
Andrés Calamaro Andrés Calamaro (Andrés Calamaro Masel, August 22, 1961), is an Argentine musician, composer and Latin Grammy winner. His former band "Los Rodríguez" was a major success in Spain in the 1990s. He is multi-instrumentalist and he became one of the main icons of the Argentine rock and has sold over 1.3 million copies.
Michael Brecker Michael Leonard Brecker (March 29, 1949 – January 13, 2007) was an American jazz saxophonist and composer. He was awarded 15 Grammy Awards as both performer and composer. He was awarded an Honorary Doctorate from Berklee College of Music in 2004, and was inducted into the "Down Beat" Jazz Hall of Fame in 2007.