Hi David, Looks like what you want is \overrideTimeSignatureSettings Details on how it works can be found at http://lilypond.org/doc/v2.25/Documentation/notation/time-signature#index-_005coverrideTimeSignatureSettings
But a basic example is as follows: \version "2.25.4" \new Staff = "main" { \overrideTimeSignatureSettings 4/4 % timeSignatureFraction - i.e. the time signature 1/4 % baseMomentFraction - what note duration to base this on 1,1,1,1 % beatStructure - this is the beat pattern #'() % beamExceptions - needed to disable the defaults, or some such thing \new Voice { \time 4/4 \relative c' { d4 d4. e8 e e } } } which produces: [image: image.png] I haven't tested this extensively on various 8th note patterns to make sure, but so far it seems to do the trick. Hopefully that'll be enough to get you started in the right direction ... I think. Michael