sentences:  In 2006, "C.E.T.C"., the experimental wing of Buenos Aires' opera house, Teatro Colón, commissioned and produced his opera Eterna Flotación-Los monstruito As often is the case in his works, the libretto was written by Edelstein, this time adapting poems from "Lo Dado" by Rodolfo Enrique Fogwill.The Clarín reviewed it as "Original, innovative – some pieces are like from the anthology of opera.