American Fangs: With Southern Backtones, Deep Cuts., Fri., Dec. 14, 8 p.m., $10/$11. Fitzgerald’s, 2706 White Oak, Houston. Amplified Heat: Fri., Dec. 21, 8 p.m., $7. Mango’s, 403 Westheimer Road, Houston. Another Run: With Square & Compass, Cache The Ghost., Sun., Dec. 2, 10 p.m., $10. Scout Bar, 18307 Egret…