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3.7.3 Saving music events to a file
Music events can be saved to a file on a per-staff basis by including a file in your main score.
\include "event-listener.ly"
This creates file(s) called ‘FILENAME-STAFFNAME.notes’ or ‘FILENAME-unnamed-staff.notes’ for each staff. Note that if you have multiple unnamed staves, the events for all staves are mixed together in the same file. The output looks like this:
0.000 note 57 4 p-c 2 12 0.000 dynamic f 0.250 note 62 4 p-c 7 12 0.500 note 66 8 p-c 9 12 0.625 note 69 8 p-c 14 12 0.750 rest 4 0.750 breathe
The syntax is a tab-delimited line, with two fixed fields on each line followed by optional parameters.
time type …params…
This information can easily be read into other programs such as python scripts, and can be very useful for researchers wishing to perform musical analysis or playback experiments with LilyPond.
Known issues and warnings
Not all lilypond music events are supported by ‘event-listener.ly’. It is intended to be a well-crafted “proof of concept”. If some events that you want to see are not included, copy ‘event-listener.ly’ into your lilypond directory and modify the file so that it outputs the information you want.
| [ << General input and output ] | [Top][Contents][Index] | [ Spacing issues >> ] |
| [ < Displaying scheme music expressions ] | [ Up : Extracting musical information ] | [ Spacing issues > ] |