I don’t know how Soviet composer Andrey Petrov got himself involved, in 1988, with his folksong arrangements Ballate, Ragazze Ballate! in the project of homages to Berio collected in Folk Songs with works of Betty Olivero, Andrea Mascagni, Carlo Galante, Zygmunt Krauze, Virgilio Savona, Salvatore Sciarrino, Claudio Ambrosini, Luca Francesconi, Hubert Stuppner, Walter Zimmermann – but there he is, performed by Johanna Knauf and Ensemble Musica ‘900 under Maurizio Dini Ciacci . It’s on Dischi Ricordi CRMCD 1009 (1989)