"Diamonds" (ダイアモンド, Daiamondo) is the seventh single by Japanese band Princess Princess. Written by Kanako Nakayama and Kaori Okui, the single was released by CBS Sony on April 21, 1989. It became their first of five consecutive No. 1 singles on Oricon's singles chart.
Background
Princess Princess' popularity was on the rise after their sixth single "Get Crazy!" was used as the theme song of the J-drama series of the same name in October 1988. "Diamonds" was released six months later. It was used by Sony for their cassette tape commercials. The song was also used by Suzuki for their Suzuki Kei commercial in 2001. It was included in the 2015 soundtrack album Yakuza 0 80's Hits! Collection.[1] More recently, it was used by Acecook for their 2020 Soup Harusame commercial featuring Anne Nakamura.[2]
The song's original key is E major (modulated to F major at the end).[3]
The B-side is "M", with its lyrics written by Kyōko Tomita and originally released in the band's 1988 album Let's Get Crazy. In a 2012 Facebook post, Tomita explained that she had broken up with a man with the initial "M" and wrote the song as a means of retribution.[4] "M" was re-released digitally on February 23, 2005, and was certified as Triple Platinum by the RIAJ in November 2014.[5]
Chart performance and reception
"Diamonds" hit No. 1 on Oricon's singles chart and was the No. 1 song on Oricon's year-ending chart in 1989.[6] It also sold over 1,097,000 copies and was certified Triple Platinum by the RIAJ in August 1990.[7][8]
ClariS covered the song on their 2019 EP Summer Tracks: Natsu no Uta.
Risky Melody covered the song on their 2019 single Diamonds Type A~C.
Nemophila covered the song in 2020 for their YouTube channel. Kyōko Tomita played drums on the cover while Nemophila's drummer Tamu Murata was out on maternity leave. It reached a million views April 2022.[12]
Rythem covered the song as the B-side of their 2006 single "Kokoro Biidama" and in the 2006 Princess Princess tribute album 14 Princess: Princess Princess Children.
NapsaQ covered the song on their 2006 album NapsaQ~Seishun Song Request~.
Masayoshi Yamazaki covered the song on his 2007 cover album Cover All-Ho!.
RSP covered the song as their 2008 single "M (Mō Hitotsu no Love Story)".
Ai Shinozaki covered the song in 2008 as her debut single.