Los Gauchos are an international, New York-based 11-piece orchestra led by Argentine pianist and composer Guillermo Klein, whose bracing music melds post-bop and tango, Latin folk and rhythms, and even gypsy flamenco and rock. Their membership is unchanged after a quarter-century and includes top-notch talent including guitarist Ben Monder, saxophonists Miguel Zenon, Chris Cheek, and Bill McHenry, trumpeter/trombonist Diego Urcola, Taylor Haskins on trumpet and flugelhorn, trombonist Sandro Tomasi, percussionist/trumpeter Richard Nant, bassist Fernando Heurgo, and drummer Jeff...