Re: Colored hairpins?

[Trevor Daniels]

Tim Reeves wrote
> Well, it helps some, but why do I get an error when I try the same thing 
> with hairpins?
>
> error: syntax error, unexpected EVENT_IDENTIFIER
>
>                r4 d4 \p d d | \repeat "unfold" 4 {d1~} | d1 \once 
> \override Hairpin #'color = #blue   \cr | d1 | d1 \f

The error is due to the \cr not being attached to a note, not the override.

It sometimes helps to attach dynamics to a zero-length spacer note - s1*0.

> and where can I put the variable redDyn in my .ly file? Everywhere I try 
> seems to give me errors, which is why I just put the \override right in 
> with the music.

Here's your example adjusted to work:

blueDyn = \once \override Hairpin #'color = #blue
\relative c'' {
 r4 d4 \p d d |
\blueDyn s1*0 \cr
 \repeat "unfold" 4 {d1~} | d1  | d1 | d1 \f
}

> Finally, when does one have to include the context, like \once \override 
> Voice.DynamicText #'color = #blue?

For this, read the Learning Manual ... :)

> Thanks for your help.
>
> Tim Reeves