 It has also been suggested that once in the convent, she studied with Gasparo Casati (1610–1641), a talented but little-known composer who was "maestro di cappella" at the Novara cathedral from 1635 until his death.The only direct evidence linking the two, however, is Casati's "Terzo libro di sacri concenti", which contains two dramatic dialogues, the earliest known compositions of Leonarda.Within the convent, she was identified in a 1958 document as "magistra musicae" (music teacher).