This character is an old equivalent of 角 as the note jué in the ancient five-tone scale.
Tips
history
龣 is not used in modern Chinese. It is an old equivalent of 角 in two music senses: jué, one of the five notes of the ancient pentatonic scale, and an old military wind instrument. It pairs the panpipe pictograph 龠 with 彔.
register
Classical only; in modern Chinese the note and the old horn are both written 角.
龠 is a pictograph of a bundled wind instrument. It supplies the music meaning — both the pentatonic note and the old horn sense of 龣 sit in the realm of pipes and tones.
phonetic
彔lù
to carve; record (phonetic)
彔 supplies the sound side of this rare graph. It is the same element inside 录 and 绿.
No stroke data for 龣; the glyph shown is your device font, so component strokes can't be highlighted.