Helloween

Helloween are one of power metal's defining bands, turning speed metal velocity, twin-guitar melody, and soaring vocals into a template that reshaped European heavy metal. The early Walls of Jericho material still carried a raw, thrashing edge with Kai Hansen singing and playing guitar, but the Keeper of the Seven Keys albums expanded the band's reach dramatically after Michael Kiske entered on vocals. Those records established the combination that became central to the style: fast drums, harmonized leads, heroic choruses, fantasy-colored scale, and a sense of brightness that did not sacrifice force. Later eras with Andi Deris kept the band active through lineup changes and added a harder, earthier vocal character, while the Pumpkins United reunion brought Hansen and Kiske back into the fold alongside Deris for a three-singer, seven-member version of the band. Helloween's catalog is vast, but its core achievement remains clear: making melodic metal feel fast, grand, technically sharp, and emotionally huge.