Muldaur’s decision to hook up with New Orleans ensemble Tuba Skinny brings her back to the prewar jazz and blues of her earliest days with the Even Dozen Jug Band during the ’60s folk revival. As suggested by Lil Hardin Armstrong’s title track, this spread of vintage covers is feelgood music for perilous times, with sackfuls of ragtime swing and a zestful spirit borne aloft by brass, banjo, washboard and acoustic guitars. Even the more troubled songs – “Got The South In My Soul”; Frankie ‘Half Pint’ Jaxon’s “Big City Blues” – leave a sweet sting.