This Playback Harden My Heart is a playback that was produced in the style of the mentioned artist Quarterflash. The original artist is not related to the creation of the playback and was only for orientation (in the style of, in the style of). This song contains in the same places as the original a backround vocals or a second voice. The playback was created in the original key. In case of deviations, you will find a note in the product information.