Chopin was the favorite composer among Japanese highbrow music fans in 1935. A forgotten German film created this fad.
In “Stukas (1943, Germany)”, directed by Karl Ritter, dive bombers create shrieking, menacing noise, accentuating the furious velocity of attack. This unnerving noise is the sound of the infamous “Jericho Trumpet”, a wailing siren device mounted on the Junkers Ju 87 (“Stukas”). The historians said that purpose of this devilish siren was to intimidate ground enemies as the aircraft engaged dive bombing. This ‘trumpet’ symbolizes the velocity and intensity of Blitzkrieg of the Third Reich during the early stage of the war.
I found this full-page ad in one of the old issues of Kinema Junpo (September 21, 1925). The ad is by a film distributor, probably specialized in German films, to inform exhibitors its new acquisition from UFA. There are nine films listed: