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.
David Paich David Frank Paich (born June 25, 1954) is an Emmy and Grammy award-winning American keyboardist, singer, composer, recording producer, and arranger, best known for his work with the rock band Toto. With Toto, Paich has released 17 albums and sold over 30 million records. Additionally, Paich has contributed to a host of artists with his songwriting and arrangements including working with Boz Scaggs extensively in the 1970s and Michael Jackson in the 1980s.