Keeper of the Seven Keys: Part I is the second studio album by German
power metal band
Helloween, released in 1987. It marks the first appearance of vocalist
Michael Kiske, and is considered the album that created the genre of European-style
power metal. It was an album dominated by guitarist
Kai Hansen, due to an injury to co-guitarist
Michael Weikath which prevented him from performing on much of the album. "
Future World" was released as a single and a music video was made for "Halloween" but with 8 minutes omitted from the song. The band originally planned to release
Keeper of the Seven Keys: Part I and
Part II as a double album, but their record label refused, insisting that the albums be released separately. Much later in 2010, both albums were released together with bonus tracks.