I'd like to clarify the use of some terms: When I want to name just one "line" of music if there's just one instrument written, what would be the correct word? Do I say "the second bar of the third system?", "the second bar of the third staff?" etc ... Would this name still apply even in the case of a single guitar tablature staff? Staff means the whole set of all lines in the page? What about the case of multiple instruments and I want to point some specific bar? Would it be something like "the first bar of the second staff of the third system"? I know in practice nobody would speak like this, but I just want to have the right definition of this terms.

  • Allan - I have edited that correction in for you. Remember it is better to do that than leave it in comments, as comments are temporary
    – Doktor Mayhem
    Commented Jun 13, 2018 at 10:24
  • I never heard the word "system" until 2 yrs ago, despite 40 years in all manner of (classical and jazz) groups. Go figure :-) . I suspect most people will understand that "system" and "line" are basically synonymous. Commented Jun 13, 2018 at 13:09

1 Answer 1


So, how to refer to a line of music in a score or part in English?

If we're talking about a single instrument that uses a single staff (or stave), e.g. a sheet of music for guitar, either notes or tablature, one could say:

  • bar (or measure) X (e.g. bar 12 — i.e. from the beginning of the piece);
  • bar X of line Y (e.g. bar 4 of line 3);
  • bar X of the Yth staff (e.g. bar 4 of the 3rd staff).

This would apply to a solo piece, or a part score from an ensemble piece.

With an instrument that uses a multiple staves, like piano or harp, one could refer to lines or systems to refer to the group of staves. So, for a piece for piano one could refer to "bar 4 of line 3" or "bar 4 of system 3". To refer to a specific bar in a specific staff of this piano part, you could refer to the staff by

  • function — right hand, left hand —,
  • clef — treble, bass —,
  • position — top, bottom (or middle if there are more than 2) —,

whatever is clearest in context. So you might refer to "the left hand in bar 4 of line 3". (Organ parts add another layer of complexity here, but organists are super-humans who are used to translating from our mundane language.)

When we get to ensemble scores, each group of staves is a system. Each instrument in a system is a part, or staff. It's easiest to refer to the individual staves by their instrumental part name: e.g. flute, 2nd trombone, timpani, harp, chorus, double-basses. In most scores the instrument names are marked down the left margin, so one can easily refer to "3rd system, 4th bar, 3rd horn" or "viola in the 4th bar of the 3rd system". There are older scores (especially from the Soviet era) that only mark changes in the instruments presented from system to system, so one may have to describe a bar thus: "bar 4 of the 2nd staff in the 3rd system".

[added] As Tim points out in the comments below, these rules don’t apply if you’re trying to navigate a score with an ensemble. Parts for the individual players will be laid out differently from the full score (except for choral scores, but more on that later), so the best way to communicate a location to the players is bar numbers & rehearsal marks.

With choral music, at least small scale works for choir with keyboard accompaniment or for a cappella works, everyone — singers, conductor, accompanist — will work off the same score, so one is able to say “let’s go from the bass entry at the upbeat to bar 4 of the 3rd system” & everyone will be able to home in on the same point in the music. One couldn’t use such an orientation phrase in a band or orchestra just because the parts for each player are differently laid out from each other & from the full score.

  • Trouble with 'bar 3 of line 4' for an ensemble is that each player's chart may well not have the same no. of lines on the sheet. Main way is 'bar 78' (second time round, maybe) as an example. Everyone will then be at the same place in the music, regardless of repeats etc.
    – Tim
    Commented Jun 13, 2018 at 6:35
  • @Tim - Granted, one wouldn’t use one’s orientation in the score to orient players in their parts, one would use absolute bar numbers, rehearsal marks or bars relative to rehearsal marks or anchor points. I’m happy to update my answer with that clarification. Commented Jun 13, 2018 at 7:03
  • Thanks, that was thorough. Wouldn't you say that a staff (in a score of a single instrument) is a system of one instrument and also be able to call a single line a system? Commented Jun 13, 2018 at 22:46
  • @AllanFelipe: I wouldn't say that a single staff is a system. Think of system as a collective noun: a system of staves, a flock of sheep, a number of statisticians... Commented Jun 14, 2018 at 1:12

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