Canción «Invitation» de HelloweenEl tema «Invitation» está incluido en: Keeper of the Seven Keys, Pt. 2 Fecha: 1988/01/01 Tema: 1 / 10 Keeper of the Seven Keys, Pts. 1-2 [Import] Fecha: 1996/08/21 Tema: 9 / 21 Keeper of the Seven Keys, Pt. 2 [Japan Bonus CD] Fecha: 2006/02/20 Tema: 1 / 15 Keeper of the Seven Keys, Pt. 2 Fecha: 2006/01/30 Tema: 1 / 15
![Keeper of the Seven Keys, Pts. 1-2 [Import]](https://www.sortmusic.com/covers_yaH/helloween/1996_170_170_Keeper%2520of%2520the%2520Seven%2520Keys%252C%2520Pts.%25201-2%2520%255BImport%255D.jpg)
![Keeper of the Seven Keys, Pt. 2 [Japan Bonus CD]](https://www.sortmusic.com/covers_yaH/helloween/2006_170_170_Keeper%2520of%2520the%2520Seven%2520Keys%252C%2520Pt.%25202%2520%255BJapan%2520Bonus%2520CD%255D.jpg)
