who's actually humming here?
maybe I'm right, maybe I'm wrong?
but this entire recording sounds like BING CROSBY'S VOICE!
earlier today this tune that came to mind
because I was humming Guilty
so I asked Alexa to play Bing Crosby 30s.

watch Bing Crosby🚬hum his version to Russ Columbo's Guilty💘31mix
hear BING'S version humming Guilty of Loving You #Shorts
   • Bing Crosby🚬hums his version to Russ ...  
FILM by Bing
   • Bing Crosby🚬sings💞Let Me Call You Swe...  
VOCALS by Russ
   • Guilty  
FILM by Russ
   • see #RussColumbo sing~Call Me Darling...  
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enjoy Bing Crosby Pictures
~Harlows Place
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