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Just a newbie question. In musical notation, is it okay to have number of notes in a bar that doesn't conform with the Time Signature?

For example, look at this music sheet: enter image description here

Can you see that the first bar only has a 1/4 note while the Time Signature is 4/4 (judging from the rest of the bars).

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There is no time signature in this example. There is nothing indicating what gets the beat and how many make up the measure. –  Dom May 3 at 18:07
    
Good point @Dom. All bars except the first have 4 beats, so 4/4 seems to be implicit. –  Bob Broadley May 3 at 18:10
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@Dom: Does it matter in this example? Is it unclear what the OP wants to know? –  Meaningful Username May 3 at 18:19
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@MeaningfulUsername I was pointing out there was not time signature in the example which is the point I wanted to make. –  Dom May 3 at 18:22
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@Dom - 4/4, 2/2 or 8/8 won't make any difference. It's got to be one of them, but for the purposes of this, it's immaterial. –  Tim May 3 at 18:31

5 Answers 5

up vote 9 down vote accepted

Yes. This is a pick-up bar, also known as an anacrusis. This melody starts on beat 4 and so this note could also be called an up-beat. That is why the first bar is incomplete. When this happens the last bar should have a complementary number of beats (in other words, the number of beats in the time signature minus the pick-up bar, 3 beats in this case).

As the music starts on beat 4, the first note feels "weaker" rhythmically than the second note, which happens on beat 1, and so has rhythmic emphasis.

Also, when you have an incomplete first bar, this is usually numbered "bar 0", with the first full bar being "bar 1".

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Bob, I don't think there a requirement for the last bar to have the complementary number of counts. It happens, for example in rounds, where there is an explicit requirement to repeat the melody line. But there are many scores where the piece starts with a pick up measure and ends with a full measure. –  Roland Bouman May 3 at 18:14
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@RolandBouman that's not musically correct though. If there is a pick up measure theoretically there should be a measure at the end combined with the first measure to be the same value as the time signature. Else the first measure isn't really a pick up measure it just starts in a different time signature. –  Dom May 3 at 18:20
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It makes sense to have the 3 beats in that last bar, - signified by a double line.That adds to four beats, with the anacrucis. Were the piece to be counted in, most of us would count 1-2-3-.If there was a repeat, it would more likely be on the first bar line. –  Tim May 3 at 18:26
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@suud - no, it can't. Unless there is a time sig. change. If it is 4/4, then there has to be 4 beats in each bar, otherwise it's not 4/4 !! –  Tim May 3 at 18:29
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For a long time now, I've omitted putting 4/4 at beginnings. Far more tunes are in 4/4 that I see it as the 'default' time sig., therefore not required. For any other, yes it gets put in. BUT - how long would it take for a reader to ascertain the time sig. of any tune - the first proper bar is a great clue ! –  Tim May 3 at 18:36

As others pointed out, the piece you cite has a "pick up measure". Note though that it is not categorically ok for measures to not add up to the number of beats in the time signature, it can only happen at the first measure.

There is another case where you can have an apparent mismatch in the number of notes and the time signature. This happens if the measure has "grace notes". Grace notes "don't count" - they don't add to the total duration for that measure.

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+1 Perhaps also add the possible anacrusis complementary final "bar" (as discussed under Bob's answer) as an additional case where you legitimately may find a mismatching number of beats to the time signature. –  Ulf Åkerstedt May 15 at 11:25

To elaborate on @keshlam's point about older music, there are all sorts of musics for which regular measure lengths are simply not part of the genre.

Go back far enough and you'll find non-mensural music, such as Gregorian and pre-Gregorian chant. The music of the trobadors (11th-13th centuries) was not noted with rhythm, and there's an argument made that that's how it was performed.

More recently (16th century) you'll find mensural music (i.e. music in measures) where the music changes time signature very frequently. Like, randomly. There was an artistic movement in late 16th century France called musique mesureé, which was somewhat experimental: it was a form in which the composer set poems by deriving the note durations from the rules (as they were understood at the time, and applied to then-modern French) of classical Latin poetry. Astonishingly for such a mechanical gimmick, the resulting music is very attractive and accessible, even while having pretty much completely randomly fluctuating bar lengths. In my experience, modern editions of the scores for this repertoire don't even bother notating the time signature, or handwave through it by calling the beat the measure and declaring the piece to be in some flavor of 1. (I think a crucial part, for modern musicians, of learning to play Renaissance music is getting over the anxious need to be told what time signature you're in all the time.)

I understand something similar is true for znamenny polyphony, for which basically measure marks are lies, despite being contrapunctal and even in a sense syncopated. (My director: "I, uh, will be beating 1, unless any of you guys have a better suggestion.")

And then there's modern music which, really, can do whatever it feels like. I remember from when I was a kid, but now cannot find, a really gorgeous concert band piece* which was in 4/4 except whenever it felt like it being in 5/4.

So, yes, measures can have whatever number of beats in them the composer wants to put in them, and composers can dispense with measures altogether.

But that? Your example? That's a pick-up, as explained above.

* Named, completely unhelpfully, "Passacaglia". And I have no recall of the composer.

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I love the matter-of-fact, colloquial approach to this answer. Thanks! –  Bradd Szonye May 4 at 1:29

It should also be noted that older/traditional music styles do not always fit our rigid definition of measures. As with time signatures like 13/16, this is sometimes because they were written to go with specific dances and reflect the fact that some steps really do take a bit longer than other steps. It may also simply be that the composers/performers/dancers didn't feel as strongly that everything had to occur on a perfectly regular downbeat. (I've seen a number of instances of this in music from the middle ages.)

And I've seen departure from regular measure lengths in more recent pieces, where the author/composer deliberately chose to do something unexpected... which, after all, is part of the definition of good music; set up expectations, then artfully break them in a way that seems reasonable. But in those cases the sheet music will generally have an explicit time signature change.

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but even (or uneven) something like 13/16 should retain that meter all through, otherwise there's no point in having the time stated at the beginning. –  Tim May 3 at 18:55
    
As I said: It's common practice now to mark the change. In older music, it wasn't always... and, of course, there wasn't always a time signature stated at the start. ... And of course there's always the risk of transcription error. –  keshlam May 3 at 19:01
    
@keshlam, I think you're confusing complex meters like 13/16 with time changes, and both with nonmensural music. –  Codeswitcher May 4 at 6:40
    
I mentioned all three, citing the complex meters in passing in showing one reason that single-measure time changes occur and attempts to represent nonmensural in modern notation as another. I probably didn't distinguish them clearly enough; that's a valid critique. –  keshlam May 4 at 13:46

As others have noted, yes, this is a pick-up measure and is valid.

However, in this specific case, I believe the Song of Time is not scored with a pickup measure. This is how I would score it:

Temple of time score

In The Legend of Zelda: Ocarina of Time, all ocarina melodies start on a full measure.

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Nope, you're both wrong. Excepting the first two bars and their restatement, the piece is in 3/4. Note the eighth note F in the first line is a down beat, as is the subsequent eighth note C. –  Codeswitcher May 4 at 6:55
    
@all: Song of Time is actually the first phrase part from Temple of Time. I don't know if that Temple of Time sheet is official or not. The only official music sheet that closely resembled to song of time's tune is Door of Time / 時の扉 and it's in 3/4. Maybe you can look at the Temple of Time's video link and tell me if it's 3/4 or 4/4. –  suud May 4 at 7:20
    
The Song of Time (and extended Temple of Time) are definitely both 4/4 time... –  WChargin May 4 at 18:45

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