Peary also found occasion to weave his singing voice into show episodes, such as "Mystery Voice" [5/10/1942] in which he referenced his former Spanish Serenader radio persona in a plot involving a Brazilian singer on a local radio show (Mel Blanc guested as the station manager), concurrently referencing his Portuguese heritage. But his best-remembered vocalism would be what radio historians have called his "dirty laugh," a descending giggle that could start from sarcasm and finish in embarrassment or substitute for being at a schoolboy-like loss for words.