I always doubt whether is PROG ROCK/METAL a genre of a specific style of rock music. If it is a genre it seems to me that is not defined by specific instrumental sounds - what kind of sound a guitar or drums should band members make for something that can be called that genre.
And according to this, all bands which made some specific, defined sound that is musically pretty similar basically, are lumped into one genre as it is not a case with prog, where prog bands sound so different, esp. when we compare for example bands Yes, Jethro Tull and Rush. For example Steve Howe in Yes plays one kind of guitar tones, while Alex Lifeson in Rush plays totally different tones than Howe(his guitar tones are obviously hard rock, unlike Howe), but both of them are lumped into one same genre.
Do you recognize what is prog and HOW? Is prog rock/metal as a genre defined by what kind of sound instruments should make?
I think prog is not defined by instrumental sounds as genres e.g. BLUES ROCK, HARD ROCK or THRASH METAL. Bands in these three mentioned genres sound basically pretty similar or the same while in prog music they sound very different. For a first time when I'm listening some blues-rock song I would easily recognize a basic guitar sound and call it blues rock, same thing with thrash metal. But I think prog is a different animal.
What you say?