Key of Heart (Korean single)

"Key of Heart"
Artist	BoA
Released	September 21, 2006
Format(s)	CD, CD+DVD, Download, streaming
Recorded	2006
Genre	Pop
Length	4:58
Label(s)	SM Entertainment
Credits
Composer(s)	h-wonder
Arranger(s)	h-wonder
Release chronology
Previous	"Key of Heart / Dotch"
Next	"Winter Love"

"Key of Heart" is the first digital single by BoA. It was released on September 21, 2006. It was used to promote Olympus cameras.

Track list

1. "Key of Heart" - 4:58

CD+DVD (CD)

1. "Key of Heart"
2. "Dotch"
3. "Key of Heart (English ver.)"
4. "Key of Heart (Korean ver.)"

DVD

1. "Key of HearT" music video
2. "Key of Heart" road movie