Nidji is an Indonesian rock band based in Jakarta. Formed on February 2002, Nidji's name comes from the Japanese word niji (虹), meaning "rainbow". The band's music can be classified under the alternative pop genre, and the band has cited Coldplay and The Killers as major influences. The band currently consists of Yusuf Ubay (vocals/saxophone), Andro Regantoro (bass), Randy Danistha (keyboards/synthesizers), Ramadhista Akbar and Andi Ariel Harsya (guitars), and Adri Prakarsa (drums).
The band has released six singles: "Child", "Sudah", "Hapus Aku", "Kau dan Aku", "Disco Lazy Time" and "Biarlah". Two of the singles, "Heaven" from the Breakthru' album and "Shadows", taken from the Top Up album, were used as background music in the Southeast Asian third season promos for the television series Heroes, and they provided soundtrack music for the Indonesian film Laskar Pelangi.
The album Breakthru' was released in 2005 with an English-language version the following year. The second album, Top Up, was released in 2007.