If a snake hear, how can it be hypnotized by the sound of harp?

Snakes do not have hearing like humans, and they are generally not hypnotized by music. Snakes "hear" by sensing ground vibrations with their jawbone and belly scales, and they are primarily sensitive to low-frequency sounds. Their sensitivity to higher frequencies is relatively low. Therefore, the sound of a harp or other musical instruments is not likely to have a significant impact on a snake.