6:33 Quarterflash - Harden My Heart (Chris' Extended Mix) 5:29 Quarterflash ~ Harden My Heart 1981 Pop Purrfection Version 4:07 Quarterflash - Harden My Heart 6:00 Quarterflash - Harden My Heart (Extended 80s Multitrack Version) (BodyAlive Remix) 6:31 Quarterflash - Harden My Heart (Extended) 3:34 QUARTERFLASH - Harden My Heart (1982) 7:40 Quarterflash - Harden my heart - Extended Wolf 6:50 Quarterflash - Harden My Heart [1981] [magnums extended mix] 9:00 Quarterflash - Harden My Heart (Torisutan Edit Extended) 4:08 Harden My Heart - Quarterflash (Live on Fridays) 1982 4:05 Quarterflash - Harden My Heart (Live in Portland 1981) 4:20 Harden My Heart by QuarterFlash 5:35 QUARTERFLASH - Harden My Heart (Live at the Hollywood Palace 1984) 3:47 QUARTERFLASH - Harden My Heart (AB 1982) 7:24 QUARTERFLASH Harden my heart REACTION - She has so much presence! first time hearing 3:49 Quarterflash - Harden My Heart (lyrics) 9:20 Quarterflash - Harden My Heart (New Disco Mix Extended Version 80's) VP Dj Duck 3:52 Quarterflash - Harden My Heart (1981 LP Version) HQ 4:17 Quarterflash - Harden My Heart (Lyric Disco Mix Extended) VP Dj Duck 5:24 Harden My Heart (Extended)_Quarterflash 10:57 Quarterflash - Harden My Heart (Extended) + Valerie 1981 6:34 QUARTERFLASH Harden my Heart (Extended Mix) 3:52 Quarterflash - Harden My Heart [4K] 3:53 Harden My Heart - Quarterflash (Remastered) 3:47 QUARTERFLASH - Harden My Heart 1982 4:21 Marv and Rindy Ross “Harden My Heart\" Live from Winona Grange in Tualatin, OR 11/12/22