All the arrangements on this album are of instrumental works that Astor Piazzolla composed for his Quinteto Nuevo Tango. Most prominent is the Vivaldi-inspired Las cuatro estaciones porteñas reimagined in concerto style for solo violin and string orchestra by Leonid Desyatnikov. The seven other companion pieces are heard here in world premiere recordings of arrangements by conductor Ken Selden, who leads the Martingale Ensemble.