Alternatives in the *middle* of a volta

[Peter Chubb]

Hi,
        I'm trying to set some music that could logically be expressed
like this:

        \repeat volta 3 {
                \firstPart
                \alternative {{
                        \firstMiddle \bar "||"
                }{
                        \finalEnd ^"Fine" \bar "||
                }}
                \secondPart
        }

So the music looks like:


                        +----------++--------+
                        | vv1,2    || v 3    |
                                        Fine
        |: music ....   | music    || end    || music ... | .... :|

                
Lilypnd 2.12.2 doesn't like \alternative in the middle of a repeated
section.

Is there a sane way to do this? 


--
Dr Peter Chubb          www.nicta.com.au    peter DOT chubb AT nicta.com.au
http://www.ertos.nicta.com.au           ERTOS within National ICT Australia