Irony of ironies - in a film that is all about dubbing actors, Debbie Reynolds herself was dubbed by Betty Noyes in this scene where she sings for Jean Hagen.
From "The Affairs of Dobie Gillis" Debbie Reynolds and Bobby Van sing All I Do Is Dream of You which Debbie Reynolds sang the year before in "Singin in the ...
Donald O'Connor & Debbie Reynolds perform the song Where Did You Learn To Dance of the musical I LOVE MARVIN in an irresistibly charming way.
outtake form Singin' in the Rain Debbie Reynolds singing You Are My Lucky Star. This scene would have come after Gene Kelly sung You Were Meant for Me.
because i've been listening to nothing else but the singin' in the rain soundtrack for the past four days.