"Nagging" () is a song recorded by South Korean singers IU and Lim Seulong. Written by Kim Eana and composed by Lee Min-soo, the pop ballad duet was used as one of the theme songs for the second season of the variety show, We Got Married, along with "I Happen to Love You" by Jo Kwon and Gain.

The song was released in South Korea on June 3, 2010, and was re-released under the title on December 14, 2011, as part of IU's first Japanese extended play I□U (2011).

Release and reception "Nagging" is a pop ballad. The song was a commercial success in South Korea. The single debuted at twelve on the Gaon Digital Chart and shot up to number-one position the following week, where it remained for three weeks.Gaon Digital Chart references for "Nagging":

Awards and nominations +Awards and nominations Year Organization Award Result 2010 Cyworld Digital Music Awards Song of the Month – June 25th Golden Disc Awards Digital Music Bonsang 2010 Mnet Asian Music Awards Best Collaboration

+Music program awards Program Date Inkigayo June 27, 2010 Music Bank July 2, 2010

Track listing

Charts

Weekly charts Chart (2010) Peakposition South Korea (Gaon) 1

Monthly charts Chart (2010) Peakposition South Korea (Gaon) 1

Yearly charts Chart (2010) Position South Korea (Gaon) 2

Sales + Country Sales amount South Korea (digital) 3,043,000Cumulative sales for "Nagging":

South Korea (ringtone) 490,000

See also List of Gaon Digital Chart number ones of 2010

References