*** Keys or Clefs ***
A key is a musical symbol that specifies the amount of notes below and the name of the carrier lines. There are three types of keys in music:
1- Solenoid valve (G):
This key is located on the second line of the carrier and is the most popular music key, and is written for many instruments such as violin, guitar and flute and ... with this key. This key carries its name to the second line, and then the rest of the carrier lines are named in alphabetical order.
The key to sol is rarely placed on line one too.
This key is usually used for bam sounds and is placed on the fourth line of the carrier. This key may appear on the third line or rarely on the fifth line.
Double Key (C):
This key can be placed on line 1 (soprano), two (metso soprano), three (alto) and four (tenor). The note referred to is the C4 key.
Note that in the current music, only the G key, line B, F, line 4, and C key line 3 and 4 are used in the music, and other keys are either theoretical or very rarely used.
