The paperback version is available from amazon for about $6.00. This is perfect for Halloween if your students cannot celebrate Halloween or if you are looking for a song in minor or a song for recorder to introduce E.
The orchestration is simple; feel free to add whistling tubes, thunder tubes and other sound effects to create a sense of mystery. Ask the children for suggestions of instruments to use instead of the shakers and chimes. Perhaps you have a gong - would the sound be as effective? Help them make musical choices about timbres.
As an extension activity, small groups of students could create a movement piece using black scarves. Consider turning the lights off and use battery operated tea lights inside hand drums as moons. The effect is very exciting!