Day Day is a previous member of the boy group Dalmatian.
He was a trainee in JYPE and other companies. And already featured in several projects before his debut in Dalmatian:
* Lee Hyori's "Shall We Dance" & "Straight Up"
* Wonder Girls' "So What"
* Uhm Junghwa's "Come to Me"
* Wheesung's "This Kind of Situation"
* Ivy's "No"
* Son Dambi's "Start"
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