Re: volta repeat with and without alternative ending

[Simon Albrecht]

Am 25.06.2015 um 11:25 schrieb Gergely K.:

On Thu, Jun 25, 2015 at 5:51 AM, Helge Kruse <address@hidden> wrote:

> Conductor will say bar number.
Nope. From my experience I would say she says everytime something different:
- from 3 measures before rehearsal mark B
- from the lyric measure
- second repeat, please
- proabaly from a specific bar number
Regards
Helge

Back to the original issue:
1)     Do you think the last bar number should be 3, 4 or 5? The logical for me seems to be 3 (yes, 2 bars will have bar number 2), or 5 (thinking it as unfolded, but then bar number 1 and 3 will point to the same measure, but bar number 3 means goto 2. alternative)
\repeat volta 2 { c4 d e f | }   \alternative {  { c2 e | }   { f2 g | }  }    c1

For what I know, there are two basic conventions here: one is used in Lilypond, see <lilypond.org/doc/v2.19/Documentation/notation/long-repeats> -> Selected snippets -> Alternative bar numbering. This will count three measures in your example.
The other one – which I personally prefer – counts the measures as they are actually played: for your example, the written measures would be numbered 1 (3) and 2 and 4 and 5. Unfortunately, this is not yet really supported in Lilypond.
Counting four measures in your examples is not an option, it would be illogical and confusing IMO.

Yours, Simon