Crazy Crazy / Harajuku Iyahoi

"Crazy Crazy / Harajuku Iyahoi"
"Crazy Crazy / Harajuku Iyahoi"
Single by Yasutaka Nakata featuring Charli XCX and Kyary Pamyu Pamyu
from the album Digital Native ("Crazy Crazy") and Japamyu ("Harajuku Iyahoi")
Released	January 18, 2017
Recorded	2016
Genre	Synthpop ("Crazy Crazy"); J-pop, EDM ("Harajuku Iyahoi");
Length	17:47
Label	Unborde; Warner Music Japan;
Songwriters	Yasutaka Nakata; Charlotte Aitchison (lyrics, "Crazy Crazy" only);
Producer	Yasutaka Nakata
Yasutaka Nakata singles chronology
Charli XCX singles chronology
Kyary Pamyu Pamyu singles chronology
Music video
	"Crazy Crazy" on YouTube

"Crazy Crazy / Harajuku Iyahoi" (Crazy Crazy / 原宿いやほい) is the first physical single (second overall) by Japanese producer and Capsule member Yasutaka Nakata, and as well as the 13th single by Japanese model-singer Kyary Pamyu Pamyu, released on January 18, 2017. The single was released in both CD and digital editions, also marking their first split single. It is also marked as the first collaboration single with British singer and songwriter Charli XCX.

Both songs were used as promotion for two different events: the "Special DJ + Live Zepp Tour 2016: YSTK x KPP" and the "Asobinite!!!- Kyary Pamyu Pamyu Birthday Special: YSTK x KPP Club Edition".