There must be an angel (Playing with my heart)

 is the fifth single released by Ide Mariko.

Single Information
 was used as the theme song for the drama Kiken na Kankei.

Single Information

 * 1) There must be an angel (Playing with my heart) ＜L.B.B. TV Mix Edit＞
 * 2) There must be an angel (Playing with my heart) ＜L.B.B. Original Mix＞
 * 3) There must be an angel (Playing with my heart) ＜D.O.I. Remix＞
 * 4) ～Mellow～ True Blue