Recording stars Billy Murray and Walter Scanlan, uncredited, provide the speaking and singing voices.
The Warner Brothers sound-on-disc system Vitaphone still had legal exclusivity, but having lapsed in its royalty payments, effective control of the rights was in ERPI's hands.
On December 31, 1926—just four months after the premiere of the first Vitaphone feature Don Juan—Warners granted Fox-Case a sublicense for using the Western Electric system.
In exchange for the sublicense, Warners and ERPI received a share of Fox's related revenues.
[1] Superior recording and amplification technology were now available to two Hollywood studios, pursuing two very different methods of sound reproduction.