575 (song)

"575" is a song recorded by Japanese recording girl group Perfume for their third studio album, JPN (2011). It was written, composed, arranged, and produced by Japanese musician and Capsule member Yasutaka Nakata. The song was included as a B-side track for the group's single, "Voice". It was also released exclusively to Uta stores in Japan on July 14, 2010. Musically, "575" was described as a mellow Japanese pop song. It marks the first time that the group perform in a rap structure, delivered after the first chorus. The song's title, and the structure of its verses, derives from the structure of haiku, a Japanese style of poetry which comprises a 5-syllable line, a 7-syllable line, and then another 5-syllable line.

Upon its release, the track garnered positive reviews from music critics, who praised the song's composition and the rap delivery. Due to the song being released digitally and as a B-side to "Voice", it was ruled ineligible to chart on Japan's Oricon Singles Chart. However, it peaked at number 73 on Billboard's Japan Hot 100 chart, and number four on the RIAJ Digital Track Chart. It was certified gold by the Recording Industry Association of Japan (RIAJ) for cellphone purchases of 100,000 units. A music video was originally to debut on their JPN tour in 2012, but the idea was scrapped. Instead, it was included on the live DVD.