Designed as a graduation project (supervised by František Muzica) at the Prague Academy in 1961. [Wikipedia] Planned to be released by Grafotechna but put on hold. [Sidun via Rennó] Shown in Jaspert with a 1969 date. Not to be confused with Ron Carpenter’s Cantoria (Monotype, 1986).

ER Canto is a reinterpretation made by Eduardo Rennó at ECAL in 2018.