Hi Joram,

> Well, they are closer than cresc and rit for example.

Definitely!  =)

> marks like 'Allegro' are valid for a whole piece or at least large parts of it

Not really… A metronome marking is only valid until the next time the tempo 
changes in any way. That change could be immediate and extreme (e.g., “Molto 
Lento”) or immediate and not-so-extereme (e.g., “Poco meno mosso”) or gradual 
(e.g., “poco accel.”). The tempo is then reset, either explicitly (e.g., 
“Allegro”) or by reference (e.g., “A tempo”).

> A similar thing (not fully equivalent) is this: bar numbers and
> rehearsal marks. Both can be used to identify a point in time, the
> latter are for larger chunks, the former more fine grained.

I agree that the analogy is not fully equivalent.

Cheers,
Kieren.
________________________________

Kieren MacMillan, composer
‣ website: www.kierenmacmillan.info
‣ email: i...@kierenmacmillan.info


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