Having touched on the idea of obbligato in that other thread, I offer you my smile of the day. The clever author of the Wikipedia entry on obbligato cites typical examples from across the centuries, and gives as a twentieth-century example:
Malcolm Arnold's A Grand, Grand Overture, Op. 57 (1956) is a 20th-century parody of the late 19th century concert overture, and contains obbligato parts for four rifles, three Hoover vacuum cleaners (two uprights in B♭, one horizontal with detachable sucker in C), and an electric floor polisher in E♭
Not unlike a typical Saturday morning organ practise. Minus the rifles, usually.
Yes, the rifle crack or canon thunder depends on whether or not the sacristan remembered to turn off the sound system after the morning Mass and the volunteer cleaners decided to dust the microphones at ambo or altar or chair.
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