“Roots” features guest appearances by
the guitarists Warren Haynes and Derek Trucks
of the Allman Brothers,
the country star Vince Gill and many others, including Edgar Winter. His next release, “Step Back,” scheduled for September, features the guitarists Eric Clapton, Billy Gibbons of ZZ Top and Joe Perry of Aerosmith.
http://www.nytimes.com/2014/07/18/arts/music/johnny-winter-dies-at-70-virtuosic-blues-guitarist.html?