J-pop idols PASSPO☆ was formed in 2009, and the girl group grabbed attention from the start—kitted out in fetching air hostess ensembles and performing airline-themed concerts. Their unique sonic mix of all-together-now singing against a driving rock backdrop flies between chugging styles, touching on power chord-guided heavy metal, galloping post-punk and slow-burning ballads. Meanwhile, sunny lyrics are flung forward over fast-paced guitar, clinging optimistically to the brighter side of life.