Contemporary sources indicate that Dave Coleman dubbed Elisha Cook Jr.'s erotic drum solo. Despite this, some modern sources believe the drumming was provided by Buddy Rich, although Rich claimed to have been so busy in Hollywood at the time that he would have been unable to remember.
"I'll Remember April" is the theme and leitmotif of this 1944 Universal movie. The song premiered two years before in the Universal production of Ride 'Em Cowboy (1942), starring Abbott and Costello. In that film, Frank Skinner was billed alone under "music by." In this film, Skinner worked under musical director Hans J. Salter (billed as H.J. Salter). Hence the song's tie-in to Universal and to Skinner.
In the last of three courtroom scenes that show a court reporter transcribing the trial in shorthand, the date under the criminal court letterhead is August 6, 1943 (the 24th day of the trial.) This may be coincidental or an inside reference to the birthday of Ella Raines: August 6, 1920.