Gadzira shanduro yakaoma zvikuru yemutsara uyu Proto-prog ndiyo nziyo dzepamberi idzo dzakatangira zvishoma nguva yeprog yapashure pa1969.
Chokwadika, shanduro yakaoma kunzwisisa zvikuru yemutsara wacho ndeiyi "Proto - prog inziyo dzapamberi idzo dzinotangira zvishoma nguva yapashure pe 1969 prog nguva, nguva apo '' dombo rinofambira mberi '' rakaumbwa nemhatsa yemitemo yemaitiro yakabatanidzwa zvakasununguka. "