| Melodic instruments |
| String Instruments |
| Wind instruments |
| Rhythmic Instruments |
| Double-skinned |
| Single-skinned |
| Without skin |
| Musical Notation. |
| Development of Arabic Musical Notation. |
| Advantages of Musical Notation. |
| Disadvantages of musical notation. |
| Register and absolute pitch. |
| Musical notation and Omani traditional music |
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