In musical notation, a clef provides the reference point for the notes on the stave. For example, the G-clef is named so because the line passing through its curl corresponds to the note G. The fancy symbol 𝄞 evolved from the Latin letter “G”.
When placed on the second line of the stave, 𝄞 is called the treble clef. Its Russian name is скрипичный ключ because the music for violin (скрипка) is written in treble clef. This is the most commonly used clef today. No wonder this symbol grew to represent music in general — much to the chagrin of bass players.