Girl's Day's Sojin lent her voice for "Ajjil Ajjil" for Part 2 of her starring SBS weekend drama 'The Family Is Coming' ('Family Outing') OST!

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"Ajjil Ajjil", composed by Lee Yoo Jin and written by Han Joon, is a medium-tempo dance track which expresses the thrill of those falling in love.

The drama portrays the story of a grandmother who reunites with her family after 50 years and brings with her an inheritance that her family fights over.