He made a cameo appearance as a man carrying a violin in his own film "Spellbound"
The Man Who Knew Too Much, 1956, 0:25:12, As the McKennas 
watch the... [DOC] [TLE] Spellbound (1945 film) - Wikipedia [PAR] Spellbound is a 1945 American psychological mystery thriller film directed by 
Alfred Hitchcock.