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.
Edward Gerhard Ed Gerhard (Edward Gerhard) is an American Grammy Award winning guitarist. He is known for his acoustic fingerstyle guitar. and lap steel guitar music.