Back to Contributors Events May 17, 2017, 7pm Special Event: Blank Forms Friends & Members - Marianne Schroeder & Stefan Tcherepnin Yamaha Artist Services Piano Salon, Manhattan May 24, 2017, 8pm Maryanne Amacher’s Petra Performed by Marianne Schroeder & Stefan Tcherepnin St. Peter’s Episcopal Church, Manhattan Blank Forms Editions Afuma: Songs From The Shore 2019 Stefan Tcherepnin: Sings 7" 2019 Maryanne Amacher: Petra 2019