Years ago, area legend Ben Kweller was dubbed a wunderkind by nearly every music publication in the country. Today, the child has grown into a husband and father--and says he's eager to reconnect his family and career to the place he still calls home: Texas.His fourth major solo album, Changing Horses, set for release next Tuesday, finds Kweller searching for vintage authenticity: He recorded the LP in analog format in only 11 days at Austin's Public Hi-Fi studio, founded by Spoon drummer Jim En