Sound:
* The violin sang like a nightingale in the moonlight. (Focuses on the beauty and sweetness)
* The violin screeched like a hawk diving for its prey. (Emphasizes the intensity and sharpness)
* The violin whispered like a breeze through the leaves. (Highlights the softness and delicacy)
* The violin roared like a lion in the jungle. (Emphasizes the power and grandeur)
* The violin pulsed like a beating heart. (Focuses on the rhythm and emotion)
Form:
* The violin was as graceful as a swan in flight. (Highlights the elegant curves and lines)
* The violin stood tall and slender like a willow tree. (Emphasizes the slimness and elegance)
* The violin was as smooth and polished as a gemstone. (Focuses on the craftsmanship and beauty)
* The violin was as fragile as a butterfly's wing. (Highlights the delicate nature of the instrument)
Other:
* The violin was as alive as a creature of the night. (Focuses on the instrument's capacity for expression)
* The violin was as powerful as a storm at sea. (Emphasizes the emotional intensity)
* The violin was as mysterious as a whispered secret. (Highlights the hidden depths of the music)
Remember to choose the simile that best fits the specific context you are writing about!