no Ellie" (1979)). As the song was the band's first summer release, the band members wanted a melody that would express this. Together, they felt that adding conga drums would add to the summer atmosphere of the song. In the band's previous album, Kikuuiki, where the band had attempted to 'mix the unmixable'. "Identity" was an extension of this, where they mixed "heavy" lyrics with a "fun" backing track. The song's sound was an experiment for the band as they considered what pop music was, when previously they had thought of their music in terms of rock. Instead of a pop sound that merely colored the band, Sakanaction wanted to create pop music with a Sakanaction approach. If they were not able to do this, Yamaguchi felt that the band would become trapped; only accessible to a small field of music fans. Because of this, Yamaguchi considers "Identity" to be a song that showed off a new aspect of Sakanaction, similar to their songs "Sen to Rei" (2008) and "Aruku Around" (2010). Composition "Identity" is an up-tempo song with a strong Latin beat, blending together Latin, rock and electro genres. The song's chorus features a vocal chorus of ten people singing in the background. The song's lyrics question the nature of what self-identity is, and strongly contrast with the song's otherwise happy and upbeat sound. The song's lyrics feature the phrase identity ga nai, umarenai, which leads the song and feature in the song's chorus. The song's protagonist says that going by measures such as what his favourite clothes, books and food are, he's just a regular person, and that him thinking about the morning's rain that led to a woman's shirt becoming set were inelegant thoughts. A scene is depicted in the lyrics where someone at the beginning of a concert compares himself with the other members of the audience, and realises that comparing yourself to others is not a proper way to live. Later, he thinks about childhood memories of defeat, and realises that these memories are his pure self. After understanding this, he feels like he wants to scream, and begins to cry. Promotion and release The song was used in commercials for the yobikō Toshin High School from the start of August 2010, and in September 2011 was added to the playable song list of the Konami arcade game Jubeat Copious. In 2013, the song became