You're Still and Old Sweetheart of Mine - Elizabeth Spencer and Henry Burr - 1919

"You're Still and Old Sweetheart of Mine" sung by Elizabeth Spencer and Henry Burr; Victor 18590-A, take 7 (10"). Acoustically recorded in Camden, New Jersey, on 27 June 1919.
Played with a Burmese Colour Needle on a gramophone with a homemade 80 Hz exponential horn, Victor Orthophonic soundbox, and HMV swan-neck tone-arm, currently in a prototype cabinet.

[@Micktwister]

What an interesting and odd device to look right into like this.
Reminds me of some sort of sea creature's gaping maw or something.