On 30 June 2011 12:18, David Santamauro <[email protected]> wrote:

> ... when does
>
>  if (c->is_alias (ly_symbol2scm ("Voice")))
>
> ever return false?

When it acknowledges an Audio_key.  The Key_performer is the only
other performer contained by a Staff context in midi; see
ly/performer-init.ly for the context definition.

Cheers,
Neil

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