What is this symbol? Does Musescore have it somewhere?

• Oct 7, 2021 - 07:38

This is sheet music from an actual professional composer from the late 80s.
There's this slanted "T" symbol on the bottom staff that is used several times. Does anyone know what this symbol is even called, and if Musescore has it? I browsed the full symbol palettes a couple times and didn't see it, but I may have missed it.
In recorded version, it is some sort of repetitive gliss-like sound effect.

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LabyrinthSymbol.jpg 397.8 KB

Comments

For which instrument is it?
(Maybe it's a clue: did you notice that this sign only appears when the other three staves have rests on the same beat? )
And if there is no the same specific symbol (I haven't seen it yet either), an image will do the trick I guess

To me that last staff looks like some kind of percussion instrument and that T-symbol is thus likely a slash-notehead.
Stems seem to be centered on the notehead (compare the diamond notehead for the gliss further on).

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