Mach

"Mach" is a song by South Korean girl group Rainbow. The song was released on October 20, 2010, and was later included on their second mini album So Girls. The song is also the group's second Japanese single. It was released on December 7, 2011 in 4 different versions: 3 limited editions (CD+DVD, CD + 28-pages photobook and CD Only + Bonus track) and a regular edition. Korean version Background A teaser photo with the concept of the song was released in October 18. The song was released to follow up the promotions of the song "A". This version does not have a music video. Track listing {{track listing | total_length = 6:22 | headline = Korean digital single:'| all_music = Han Jae Ho and Kim Seung Soo | title1 = Mach | note1 = 마하; Maha| lyrics1 = Song Soo Yoon | music1 = Han Jae-Ho, Kim Seung Soo | length1 = 3:11 | title2 = Mach | note2 = Instrumental | music2 = Han Jae-Ho, Kim Seung Soo | length2 = 3:11 }}