‘Lollipop’ is the commercial song released as digital single before 2NE1’s official debut. The music video of ‘Lollipop’ made a big issue that they used LED set cost more than 100 thousand dollars to expressed colorful scenes and also 2NE1 and Bigbang showed dynamic moves wearing colorful clothing. Especially CL and Minzy’s dance on the video proves their talent and how they have trained more than 4 years for their debut. Teddy of 1TYM and G-Dragon of Bigbang produced this brilliant track, and it ranked no.1 in all the Korean online music charts which is an exceptional case for the commercial song.