"I Wonder Where My Baby Is To-Night?" sung by Henry Burr and Billy Murray, assisted by Carl Mathieu, with piano accompaniment by Frank Banta; Victor 19864-A, take 5 (10"). Electrically recorded in Camden, New Jersey, on 4 December 1925.

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.