Complex sentence: They are significant in sacred ritual and fulfill a story-telling role as many of their sounds and tunes are imitations of the sounds of nature, including the wind, the seas and the natural world of birds and insects.
Split into simpler sentences: They are significant in sacred ritual and fulfill a story-telling role. Many of their sounds and tunes are imitations of the sounds of nature, including the wind, the seas and the natural world of birds and insects.