The Best Rock Album was won by Green Day.
The group has won five Grammy Awards : Best Alternative Album for Dookie , Best Rock Album for American Idiot , Record of the Year for `` Boulevard of Broken Dreams '' , Best Rock Album for the second time for 21st Century Breakdown and Best Musical Show Album for American Idiot : The Original Broadway Cast Recording .	Dookie	Dookie	American Idiot	American Idiot	21st Century Breakdown	21st Century Breakdown	Grammy Awards	Grammy Awards	Best Alternative Album	Best Alternative Music Album	Best Rock Album	Best Rock Album	Record of the Year	Record of the Year	Boulevard of Broken Dreams	Boulevard of Broken Dreams (Green Day song)	Best Musical Show Album	Best Musical Show Album	Best Musical	Tony Award for Best Musical
