Doc Watkins, an accomplished bandleader, a gifted musician, and the owner of SA’s swank Jazz, TX venue has long been invested in supporting and championing the San Antonio music milieu. His venue, which is a sort of refined version of the old-town dancehalls and saloons that it’s (at least in part) modeled upon, has hosted a slew of excellent shows — ranging from jazz, blues, big band, Texas swing, salsa, conjunto and Americana — in its year and a half of existence. This Wednesday, Watkins and company will present a special holiday performance, but not the bill of X-mas standards you might expect. Instead, the group will present the music of A Charlie Brown Christmas, the beloved TV special that first aired in 1965. The music, composed by accomplished jazz pianist Vince Guaraldi, is as off-beat as Charlie Brown himself. At the time of its release, it was just one more way the seminal Peanuts series challenged the entertainment orthodoxy.