NEW ORLEANS, LA - December 14, 2006 After a year in exile in Memphis, the 6th Annual Ponderosa Stomp, a music festival that celebrates and pays tribute to the unsung heroes of rock ‘n roll, rhythm & blues, and other forms of American roots music, will return home to New Orleans on Wednesday, May 2, 2007 at the House of Blues from 6 p.m. 2 a.m. Already slated to perform at this year’s Ponderosa Stomp: Master arranger Wardell Quezergue and the New Orleans Rhythm & Blues Revue, soul songwri …