Chris Thomas of C. F. Martin & Co. recently visited the Guitar World office in New York City. Accompanying him were four new Martin models -- a 00-DB Jeff Tweedy, a new D-18, the GPCPA4 Siris and a Custom Shop CS28-12 -- all of which were debuted by the Nazareth, Pennsylvania-based company at the NAMM show in January.

More than a decade and a half has passed since Jeff Tweedy formed Wilco from the ashes of alt-country pioneers Uncle Tupelo. In that time, the group has risen to become one of the most revered acts in current popular music, mining a singular sound that is simultaneously anchored in a rootsy approach and meandering along rock's outer sonic limits.

Guitar World is ringing in the holidays with ZZ Top frontman Billy Gibbons. With a long-awaited ZZ Top album on the way, the Reverend Willie G. has a wealth of things to celebrate this holiday season. Plus, Slash, Zakk Wylde, Lamb of God and Judas Priest talk about their upcoming albums and projects for 2012.