Did Josef Locke stand in for gigli at the convent garden?

Did Josef Locke stand in for gigli at the convent garden?
Yes. This event was always included in Josef Locke's biographicalNotes on his LPs. Jsef Locke often rewferred to it in later lifesaying that the critics applauded his singing although hesusbstituted his own words for the arias he did not fully know.