AH.... ok that explains it. Good to know for future reference.
On 7/5/26 11:33 AM, Timothy Lanfear wrote:
On 05/07/2026 18:04, Walt North wrote:
But that leaves the mystery for a later date about using relative
with tags in a function. I have experimented with
\resetRelativeOctave but that seems a bit cumbersome.
When music is written using \relative, converting from relative to
absolute pitch happens before filtering tagged music. So in your
example there are two cs, resulting in the following music being an
octave too low. The solution is to use the rather obscure
make-relative macro as below. The function par should operate
correctly with both \relative and \absolute note entry.
\version "2.26.0"
\language "english"
par = #(define-music-function (note) (ly:music?)
(make-relative (note)
note
#{
\tag #'(piano) { $note }
\tag #'(guitar) { \parenthesize $note }
#}))
music = \relative c' { r8 b16 cs gs'4 b,16 cs gs'8 \par cs,8 <a cs e>~ |}
\score {{
\keepWithTag #'piano {\music}
}}
\score {{
\keepWithTag #'guitar {\music}
}}
--
Timothy Lanfear, Bristol, UK.
