In transforming from acoustic folkie to electrified rocker , a process begun in earnest on side one of 1965 's bring it all back home , dylan rewrote the rulebook for pop music .
In that multistranded 2007 film , mr. haynes used different actors , men and women , black and white , to represent bob dylan or , rather , the multiple identities ( folkie , mythmaker , rocker ) that this shape-shifting singer has assumed over his career .
