"I was always around musicians who had stuff coming out and were excited," says Walking the Crooked Mile director/producer David N. Reyes, who previously produced 41/2 years' worth of "Musician Audition" segments for Austin ABC affiliate KVUE's local news. "I wanted to see what it was like during the down time." Thus was born his documentary, which distills 16 months in the lives of local singer-songwriter Mike Rosenthal and now-defunct River City rockers 50 Mission Crush into 76 minutes of exhilaration, frustration, and apprehension, with further commentary by Terri Hendrix, Darin Murphy, and Lisa Tingle. The scenes shot at SXSW 01 and 02 are especially revealing, Reyes acknowledging, "I understand exactly what they're up against in terms of recognition." These days, he says, with fewer clubs and overall slots for musicians to play, "there's less space for those without the push. It's harder to break through." Walking the Crooked Mile premieres at 1:15 and 2:45pm Sunday, at the Alamo Drafthouse Downtown, with an afterparty at the Red Eyed Fly featuring Rosenthal and 50MC drummer Chris Didear's new band Deejer.