1950 Music in the Attic (Musikk På Loftet) Música No Sótão

A great family movie from Scandinavia, Norway.
The film is about Lars and Lotte, two children whose father owns a music shop. The father wants them to learn to play, but instead of playing the instruments they destroy them. One night Sandman comes and makes them dream that they go up in the attic where their father's old instruments are. The instruments come alive, and play melodies. After this, Lars and Lotte no longer want to destroy the instruments, and start playing them instead.