Twicecoaster: Lane 1 (stylized as TWICEcoaster: LANE 1) is the third extended play (EP) by South Korean girl group Twice. The EP was released digitally and physically on October 24, 2016 by JYP Entertainment and distributed by KT Music. It contains seven tracks, including the lead single, "TT" produced by Black Eyed Pilseung who also composed Twice's hit songs "Like OOH-AHH" and "Cheer Up". The EP is the highest selling K-pop girl group album of 2016, which sold 350,852 units at year-end.