Lee Hyori’s coming back with her new track called "Seoul" in nearly four years. 
 
On June 26, Hyori's agency--Kiwi Media Group announced singer Lee Hyori's comeback with pre-release track called "Seoul".

According to the report, for Hyori's upcoming album Hyori collaborated with composer named Kim Hyung Suk and '10 minutes' producer named Kim Do Hyun.Hyori’s new track called "Seoul" was pre-released on June 28th 6:00PM KST, ahead of her official comeback album. Her official comeback album is set to be released on July 4th. 

(Source = 'Kiwi Media Group' Official Website, Twitter )

(SBS Star)