I'm currently engraving a hand-written SATB piece in LilyPond and encountered some music notation I'm not really sure what to do with. It consists of four consecutive quarter notes with each note having "<" and ">" signs below them (it's in the alto part). The lyrics are in Swedish.
An ASCII art attempt at this looks something like this:
--|--|--|--|-- --o--o--o--o-- < > < >
My interpretation is that they are intended as single-note crescendos followed by decrescendos. Are there other valid interpretations of this that are specific to choral music?
Also, I still haven't found a way to produce this "decrescendo" sign in LilyPond, at least not in a visually appealing way.
Maybe taking an accent sign and mirroring it horizontally could work, but I haven't delved into tweaking LilyPond out that far yet.
I'm now going with the Unicode MUSICAL SYMBOL CRESCENDO (U+1D192) and DECRESCENDO (U+1D193) simply attached as markup strings to the notes in question. For now, that is as close as I can get, semantically and visually. This is the LilyPond output:
The arranger of this piece is Hans Zimmergren (1937-2018), and the music (according to the manuscript) is based on an english traditional melody. The lyrics are an excerpt from Sakarias 9:9 (which is probably Zachary 9:9 in the English-speaking world). It's a single-page manuscript of 16 bars, probably intended as part of service. No tempo indicated, but as it is kind of hymnal it's probably andante at the most.