He made a cameo appearance as a man carrying a violin in his own film "Spellbound"
[DOC] [TLE] Alfred HitchcockMilk the Franchise [PAR] Alfred Hitchcock's cameo appearance in SABOTEUR (1942) was originally going 
to be ... Universal Pictures He then decided to cast himself in a cameo as a man 
using sign ... elevator at the Empire State Hotel, carrying a violin case and 
smoking a cigarette.