Black Out is an instrumental euphoric trance track composed by Tsukasa (矢鴇つかさ) of the music-creator collective Arte Refact. It was originally commissioned for HALFPIPE TOKYO, a digital-real attraction at SEGA's Tokyo Joypolis, where the genre was listed as Euphoric Trance, euphoric referencing the sense of elation the ride aims to evoke. The track pairs elegant piano lines with driving synthesizer textures, building toward breaks timed to match the escalating motion of the attraction itself. Alongside Fragrance, it was one of two songs Tsukasa created specifically for HALFPIPE TOKYO. Black Out joined maimai PLUS on May 9, 2013, as part of a wave of Joypolis attraction music. In the game's early life, it was unusual for having its EXPERT and MASTER charts share the same level at launch, and briefly, during maimai GreeN PLUS, the EXPERT chart (Lv. 11) actually outranked MASTER (Lv. 10), one of only a handful of songs in the series to invert the expected difficulty ordering. Over subsequent version updates, both charts were rebalanced upward, settling at Lv. 13 by the FESTiVAL era. The song's jacket art was updated in maimai でらっくす Splash to add the title text; the original maimai PLUS-era jacket displayed no song name. Black Out is available across all regions (JP, International, USA, and China).