Who is the composer of the studio album "on the rock" and a Grammy award winner?
On the Rock On the Rock is the 20th studio album by Argentine singer-songwriter Andrés Calamaro, released on June 1, 2010.
Michael Brauer Michael Brauer is a New York-based mix engineer. He received a Grammy for "Best Pop Vocal Album" for his work on John Mayer's Continuum, "Best Alternative Album" for Coldplay's "Parachutes", and also "Best Rock Album" for Coldplay's "Viva La Vida".