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.
Qmillion Qmillion (born Keith Lewis, in the US), is a record producer, mix engineer, composer, and writer based in Los Angeles. Qmillion's achievement for recording and mixing recording artist Robert Glasper's critically acclaimed "Black Radio" album, gained him a Grammy Award for Best R&B Album at the 55th Grammy Awards in 2013.