2001-2002: Formation and "Ai no Uta"

In 2001, Nintendo enlisted singer instrumentist Gan^[1] Matsumoto, credited as Takeshi Tomozuma in the project, to create music to be used in their then-upcoming GameCube title Pikmin, created by Shigeru Miyamoto. Tomozuma came up with "Ai no Uta", and then called Tomoe Watanabe to record vocals, that way, forming the Strawberry Flower duo.^[2] The song was released as a single in December of that same year, climbing to #2 in the Oricon charts in January 2002, becoming a massive hit and selling over 600,000 copies, outselling Japanese sales of Pikmin itself.^[3] The song did boost the game's sales though, eventually hitting over 500,000 copies sold in the country. "Ai no Uta" would prove itself a massive hit, being the 8th best selling single in 2002 in Japan, according to Oricon.^[4]

"Ai no Uta"'s lyrics tie in to the games, talking about the events from the game from the Pikmin's point of view. A version for the TV commercials, more directly talking about the Pikmin was also recorded, both versions were included in the Pikmin World soundtrack, released in May 2002. Meanwhile, the single release had a B-side called "Namida ga Afureta", which talks about the game's events from Olimar's point of view. This one is exclusive to the "Ai no Uta" single.

Strawberry Flower's second single was a collection of three instrumental remixes of "Ai no Uta" titled "Pikmin Dance", released under the name "Strawberry Music Group". In 2002, a French version entitled "Vos Meilleurs Amis" was released as a single in France by Virgin France, also used in Pikmin TV commercials in the country. The song was recorded by a French singer named Juliette Katz.^[5] A shortened version of it, used in the ads, was also included in Pikmin World.

2004: "Tane no Uta"

Nintendo commissioned Strawberry Flower for promotional Pikmin music once again, this time, for TV commercials for the GameCube title Pikmin 2. The resulting single was "Tane no Uta", released in May of 2004, based on the Japanese children's nursery rhyme "Koganemushi", with the lyrics adapted to talk about each Pikmin color.^[6]

The CD single also came with a cover of the Japanese nursery rhyme "Shabondama" and a remix of "Ai no Uta", with re-recorded vocals and instrumentation.

Just like "Ai no Uta" in the first game, "Tane no Uta" was not actually included in Pikmin 2 in any form. However, "Ai no Uta" was included in this game as an easter egg.

2005-2014: Hiatus and worldwide exposure

Ever since "Tane no Uta", Strawberry Flower would not return to work with Nintendo or Pikmin anymore with new songs, despite the Pikmin series getting new installments in the following years.

However, "Ai no Uta" and "Tane no Uta" would be reused by Nintendo in other projects. The first of them was the 2008 crossover fighting game Super Smash Bros. Brawl, where both songs were included as background music for the Pikmin-themed Distant Planet stage. The french version of "Ai no Uta" was also included.^[7] With the worldwide release of the game, that marked Strawberry Flower's first appearance worldwide, leading to a cult following among international Pikmin fans. Those songs did not return in future Super Smash Bros. games.

With the release of Pikmin 3 in 2013, "Ai no Uta" was once again used in advertisements for the game. This currently stands as the latest usage of Strawberry Flower music in Pikmin media.^[8]

2015: Brief reunion and "arukuhayasade"

February 2015 marked a brief reunion for the band with the single "arukuhayasade". It was their first released independently and worldwide, and was also the first with no ties to Pikmin or Nintendo, being written as a tie-in to a book of the same name.^[9]

Singles