Pink Bubbles Go Ape is the seventh studio album by the German power metal band Helloween, released on September 22, 1991. The album marks a significant shift in the band's sound and lineup, as it was the first album to feature Roland Grapow (guitar) and Uli Kusch (drums) as full-time members, replacing the previous guitarist Kai Hansen and drummer Ingo Schwichtenberg. It also represents a departure from the more straightforward, fast-paced power metal style that Helloween was known for, incorporating more experimental and diverse musical elements.
Pink Bubbles Go Ape is often considered one of the band's more polarizing albums. While it retains elements of their classic power metal sound, the album introduces more experimental and hard rock influences, often incorporating a slightly more commercial, less aggressive tone than its predecessors. This shift in direction was partly influenced by the changing musical landscape of the early '90s and the departure of key members who had helped define Helloween's earlier sound.
The album features a mix of songs that range from high-energy, fast-paced tracks to more melodic and experimental pieces, with a greater emphasis on melody and rhythm over the technical proficiency and speed that characterized their previous work.