The Royal Command Xylophonist, Doreen, plays (what sounds like) 'Swanee River'.
Full title reads: "Pathetone now has pleasure in presenting: Doreen - the Royal Command Xylophonist".
Pathe Studios, London.
Various shots of Doreen, a youthful platinum blond musician, playing the xylophone. She plays a tune which sounds like her arrangement of 'Swanee River', although according to old records the tunes played are 'Good Night Sweetheart' by C. Connelly and 'Old Folks at Home' (the latter is alternative title for 'Swanee River' - SL).
Note: artist's last name is unknown - any information greatly appreciated. AH 2001.