Also during the Austin Music Awards, Shawn and Shandon Sahm paid tribute to their father, Doug Sahm, who died in November. A catalyst and inspiration on the Austin music scene, Sahm is being mourned and celebrated throughout this weekend’s South by Southwest music conference. Augie Meyers, Sahm’s longtime keyboard partner, and Speedy Sparks, who played bass often for him, appeared with the Sahm brothers. “This is kinda hard for us to do,” Shawn said. Their brief set included “Mendocino” and “She’s About a Mover,” hits from Sahm’s Sir Douglas Quintet days. A longer celebration is scheduled for midnight Friday at Austin blues club Antone’s.