The song "Magnu" by Hawkwind tells the story of a powerful and mythical horse named Magnu, who is summoned to aid the singer in his quest. Magnu is described as being able to fly through space with the speed of lightning, and his golden mane is praised for its beauty and power. The singer calls upon Magnu to help him defeat those who would harm him, using his sunbeams as weapons to destroy those who are ill-intentioned or deceitful. He also suggests that sunlight can help to enlighten good minds, but that this light can be diminished by the "reign of night." Later in the song, a burning brand is seen to fall, and the hoofbeats of Magnu are heard circling around. This suggests that Magnu has arrived to aid the singer and to help him achieve victory over his enemies. Overall, "Magnu" is a powerful and mystical song that celebrates the power of myth and legend, and the belief in mystical creatures and powerful beings that can aid us in times of need. So, the song is an tribute to the power of nature, and the way that we can draw upon it to achieve our goals and overcome our challenges.