The cover of Science magazine showing the notation system for whale sonograms by Roger Payne and Scott McVay.

jstor.org/stable/1731712

See also Michael Deal's piece "Whale Song Explained" for an accessible history of whale song representation: medium.com/@dealville/w...

Plate from Lee Jin-weon's "The Correlation between
the Musical Notations of Korea and China" comparing melodic notations from Korea & China.

From chapter 6 of the vol. "Music Notations of Korea" by the National Gugak Center. It can be downloaded here: gugak.go.kr

Examples of bird songs from Simeon Pease Cheney's 1892 "Wood Notes Wild: Notations of Bird Music" (Cheney died in 1890, so this was published posthumously).

Images are from pages 39, 94, and 101. Cheney's book is downloadable here: archive.org/details/wood...

Some highlights:

Example of Pádraig O’Keeffe's Accordion tab. It's the featured cover image from the page of an accordion manuscript in the collection of the Irish Traditional Music Archive (ITMA).

www.itma.ie/notated-coll...

200+ more entries added to the Timeline of Music Notation since the last update. 1700+ entries total now!

silpayamanant.wordpress.com/timeline-of-...

A number of Korean notations; systems for animal songs (esp. for birds/whales); accordion/free reed tabs; & some dutar/fiddle/folk instr. tabs.

"Score-type notation of Maibataraki made by an amateur musician, Tazaki Enjirō. Ōtsuzumi in blue, kotsuzumi in red, taiko in green and red, and the chanting text and nohkan’s shōga in black from right to left in a column."

noh.stanford.edu/music/notati...