Pink Bubbles Go Ape is the fourth studio album by German power metal band Helloween, released in 1991. It marked the departure of guitarist Kai Hansen, with Roland Grapow replacing him. It was also the first album released on EMI Records. The album contains two singles, which are "Kids of the Century" and "Number One". "Kids of the Century" reached #56 in the United Kingdom. The track "Heavy Metal Hamsters" (supposedly written about the band's former record company) was, according to Michael Weikath, never intended to be on the album, but rather on a B-side of a single. Many disputes between the producer, bandmembers, management and the record company ensued. Weikath laid much of the blame at the feet of veteran Brit Metal producer Chris Tsangarides. Weikath said, “Straight away, I could tell things were going wrong, The show was being run by Michael and Ingo, and Chris simply didn’t like my songs. He couldn’t understand that certain cleverness they had.” Weikath wanted Tommy Hansen to produce the album. Also the band spent close to 400,000 pounds recording the new album. “The whole situation was bad,” Kiske said 2017. “We spent a fortune in a studio in Denmark, but there was no inspiration.” Storm Thorgerson designed the Pink Bubbles Go Ape’s cover and the girl on that cover is his niece. Thorgerson also directed the promo-video for "Kids of the Century." Helloween had left Noise Records and turned to EMI. After the album was released, a lawsuit stopped Helloween from tour