Lyrical tidbits best capture the essence of this past weekend's Matador at 21 series of concerts at the Palms Hotel & Casino in Las Vegas. The words arrived in rhyming couplets and shattered-monocle verbal abstractions, delivered by 26 acts over three days. ...“You've got the flavor,” shouted the Blues Explosion's Jon Spencer, dedicating the song “Flavor” to his former record label, the East Coast indie tastemaker Matador Records, during a raucous set of meta-blues and trash rock at the casino's concert venue the Pearl Theater. The New York label, with the aid of L.A.-based promoters FYF Fest, threw a memorable,...