Jacksonville&rsquo;s only (at least to our knowledge) 10-piece salsa dura ensemble, LPT, formed in 2015 with one mission: to preserve and perfect the old-school descarga style popularized in the 1970s by the likes of Fania All-Stars. Now, the band celebrates the release of its debut album,   SIN PARAR. 8 p.m. Friday, Jan. 31, 1904 Music Hall, Downtown, 1904musichall.com, $5-$15.