"Sunshine Sunshine" is a song by Japanese musical act Superfly. Written for a national radio campaign called Meet the Music, it was released as a double A-side single along with "Beep!!" in March 2011.

In March 2010, released Wildflower & Cover Songs: Complete Best 'Track 3', a 2-CD set featuring a four-track single and a full-length cover album of classic rock songs. It was led by the song "Wildflower", the theme song for the drama Gold, and also featured "Tamashii Revolution", a song used to promote the NHK broadcast of the 2010 FIFA World Cup. Both songs were commercially successful, with "Wildflower" becoming certified Platinum for downloads by the Recording Industry Association of Japan, and "Tamashii Revolution" certified platinum twice. This was followed by "Eyes on Me", a ballad single released in December used as the theme song for the Square Enix shooting game The 3rd Birthday.

"Sunshine Sunshine" was written for Meet the Music, a radio campaign by KDDI and FM radio stations across Japan. The song was released to radio in mid January, 2011. The song was written after "Beep!!", after Meet the Music campaign organizers asked Ochi to write something about music. Superfly vocalist Shiho Ochi wrote the song about what music personally meant to her, and wanted to create a song that would allow listeners to relax and unwind.

The song was released as a single also featuring Superfly's song "Beep!!" as the other A-side. The limited edition version of the single featured an additional DVD, with a performance from the Superfly & The Lemon Bats Special Live "Rock'N'Roll Muncher", a three-date tour in November 2010 commissioned by Switch! music magazine to celebrate the magazine's 25th anniversary. The Lemon Bats are a group formed by Superfly, featuring Tatsuya Nakamura of Losalios, Kōichi Tsutaya, Kazuhiro Momo of Mo'Some Tonebender, Yoshiyuki Yatsuhashi and Hidekazu Hinata of Straightener.

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