What animal with purple wings that's flies and sing sweet melodies?

The animal you're describing sounds like a fictional creature, as there are no known real animals that match that exact description. However, the closest real-world counterpart might be the violet-crowned hummingbird, which has iridescent feathers that can appear purple. While they are known for their vibrant colors and can produce sounds, they do not sing in the melodic sense typically associated with Songbirds. In literature and mythology, such a creature could represent beauty and harmony.