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Okay, so the first question is: "What IS prog rock anyway?" Well, it is
slightly difficult to define. Progressive rock is a form of music which
draws from many influences. In most cases, instrumentation is based on a
typical rock base (guitars, bass, drums, piano/organs, etc). It is often
augmented by less typical instruments such as violin, flute, mellotron,
and any sound effects the artists can lay their hands on. Structure can
vary from typical rock arrangements to classically-influences structures
of theme-and-variations to virtually unstructured. Song length has varied
(in my experience) from 1 minute to 75 minutes. More typical are songs in
the five to 20 minute range.
While progressive rock does not require such things, it does not shy away from use of strange or irregular time signatures, key changes, or atonalities/bitonalities. These things can be used to portray to the listener or illicit from the listener specific human emotions, and are thus used to express.
General Progressive Rock Pages | ||||||||||