| Official |
|---|
| 1.1 | Harden My Heart | 3:53 | Quarterflash | Quarterflash | Quarterflash | Album | | Geffen Records | 25AP 2240(GF) |
| 1.1 | Harden My Heart | 3:51 | Quarterflash | Quarterflash | Quarterflash | Album | | Geffen Records | GHS 2003 |
| 1.1 | Harden My Heart | 3:53 | Quarterflash | Quarterflash | Quarterflash | Album | | Geffen Records | 2003-2 |
| 1.10 | Harden My Heart | 3:51 | Quarterflash | American Heartbeat | Various Artists | Album + Compilation | | Epic | EPC 10045 |
| 1.10 | Harden My Heart | 3:51 | Quarterflash | American Heartbeat | Various Artists | Album + Compilation | | Epic | 40-10045, EPC 40-10045 |
| 3.11 | Harden My Heart | 3:51 | Quarterflash | Great Love Songs of the ’70s & ’80s | Various Artists | Album + Compilation | | Time–Life Music | OPCD8502/R103-18 |
| 1.11 | Harden My Heart | 3:51 | Quarterflash | Great Love Songs of the ’70s & ’80s, Missing You, Vol. 3 | Various Artists | Album + Compilation | | Time–Life Music | |
| 1.9 | Harden My Heart | 3:53 | Quarterflash | Cosmopolitan, Volume 4 | Various Artists | Album + Compilation | | MCA Records , Sandstone Music | MSD-35355, SAN 5018 |
| 1.15 | Harden My Heart | 3:50 | Quarterflash | Solid Rock | Various Artists | Album + Compilation | | Razor & Tie | |
| 2.5 | Harden My Heart | 3:51 | Quarterflash | Pop Giganten: Hits der 80er, Vol. I | Various Artists | Album + Compilation | | Ariola | 74321 13103 2 |
| 1.4 | Harden My Heart | 3:53 | Quarterflash | Classic Rock, Volume 1 | Various Artists | Album + Compilation | | MCA Special Products | MCAD-20754 |
| 1.4 | Harden My Heart | 3:52 | Quarterflash | Only Rock ’n Roll 1980–1984- 20 Pop Hits | Various Artists | Album + Compilation | | Warner Special Products | JCT-3127 |
| 1.9 | Harden My Heart | 3:52 | Quarterflash | The Greatest Hits of the 80's, Volume 1 - Turbo Mania | Various Artists | Album + Compilation | | CEMA Special Markets | S21-17896 |
| 1.4 | Harden My Heart | 3:52 | Quarterflash | Only Rock’n Roll: 1980–1984 | Various Artists | Album + Compilation | | JCI | JCD‐3127, OPCD‐1665 |
| 1.7 | Harden My Heart | 3:53 | Quarterflash | Rock On: 1982 | Various Artists | Album + Compilation | | Madacy Records | ROK-2-1982 |
| 1.2 | Harden My Heart | 3:50 | Quarterflash | We Are The '80s Vol.5 - FM802 (Sunday Sunset Studio) Presents | Various Artists | Album + Compilation | | MCA Records | MVCM-632 |
| 1.6 | Harden My Heart | 3:50 | Quarterflash | La Légende des Tubes, Volume 3 | Various Artists | Album + Compilation | | PolyGram - Kiosks | 6422 |
| 1.7 | Harden My Heart | 3:54 | Quarterflash | The ’80s Hit(s) Back… Again! | Various Artists | Album + Compilation | | Hip‐O Records | HIPD-40005 |
| 1.1 | Harden My Heart | 3:51 | Quarterflash | Harden My Heart... The Best of Quarterflash | Quarterflash | Album + Compilation | | Geffen Records | GEFD-25123 |
| 1.2 | Harden My Heart | 3:49 | Quarterflash | Geffen Vintage 80s Volume 2 | Various Artists | Album + Compilation | | Geffen Records | |
| 1.8 | Harden My Heart | 3:47 | Quarterflash | Les Années 80 + Mode d’emploi, Tome 2 | Various Artists | Album + Compilation | | East West France | 9548 35246-2 |
| 1.7 | Harden My Heart | 3:52 | Quarterflash | Retro Lunchbox: Gooey Love Song | Various Artists | Album + Compilation | | EMI‐Capitol Music Special Markets | 72438-19718-2-6, 9525 |
| 1.12 | Harden My Heart | 3:53 | Quarterflash | 80’s Rock ’n Roll Greats 1980–1987 | Various Artists | Album + Compilation | | Metacom | |
| 1.6 | Harden My Heart | 3:53 | Quarterflash | The Number One’s: Classic Rock | Various Artists | Album + Compilation | | | |
| 1.7 | Harden My Heart | 3:52 | Quarterflash | Rock of the 80’s | Various Artists | Album + Compilation | | MCA Special Products | MCAD-21092 |
| 1.12 | Harden My Heart | 3:52 | Quarterflash | One Shot ’80 | Various Artists | Album + Compilation | | Universal | UMD77046 |
| 1.5 | Harden My Heart | 3:53 | Quarterflash | Pure Rock 1981 | Various Artists | Album + Compilation | | SR International | 33 911 9 |
| 2.9 | Harden My Heart | 3:52 | Quarterflash | Ulli Wengers One Hit Wonder, Volume 1 | Various Artists | Album + Compilation | | Ganser & Hanke Media | 770 110-2 |
| 3.8 | Harden My Heart | 3:51 | Quarterflash | Classic Rock 80’s | Various Artists | Album + Compilation | | Universal Music Special Markets, EMI‐Capitol Music Special Markets, Warner Special Products | 3145600252, 72435-27663-21, OPCD 1899 |
| 2.10 | Harden My Heart | 3:55 | Quarterflash | Classic Rock: Women in Rock | Various Artists | Album + Compilation | | Time–Life Music | TL559/29 |
| 1.8 | Harden My Heart | 3:55 | Quarterflash | I Want My 80’s Box! | Various Artists | Album + Compilation | | Hip‐O Records | 556758 |
| 1.8 | Harden My Heart | 3:54 | Quarterflash | The Top 80’s | Various Artists | Album + Compilation | | | |
| 1.3 | Harden My Heart | 3:51 | Quarterflash | A Year in Your Life: 1982, Volume Two | Various Artists | Album + Compilation | | Definitive Records | 560072 |
| 1.14 | Harden My Heart | 3:52 | Quarterflash | Hot Summer 2001: Uno | Various Artists | Album + Compilation | | Sorrisi e Canzoni TV | HS 200101-TVSC |
| 1.6 | Harden in My Heart | 3:48 | Quarterflash | Mes Soirées New Wave No. 2 | Various Artists | Album + Compilation | | Universal Collections | 940 336-2 |
| 5.7 | Harden My Heart | 3:52 | Quarterflash | The Ultimate Jukebox Hits of the 80s | Various Artists | Album + Compilation | | Collectables | COL-CD-0126 |
| 1.14 | Harden My Heart | 3:43 | Quarterflash | The Sound of Winter | Various Artists | Album + Compilation | | | |
| 1.3 | Harden My Heart | 3:51 | Quarterflash | ’80s Hits | Various Artists | Album + Compilation | | Universal Music Special Markets | B000068602 |
| 1.15 | Harden My Heart | 3:51 | Quarterflash | New Wave | Various Artists | Album + Compilation | | Universal Licensing Music | 069 926-2 |
| 2.10 | Harden My Heart | 3:50 | Quarterflash | Les Tubes 80 introuvables, Volume 2 | Various Artists | Album + Compilation | | EMI Music France | 864 756-2 |
| 2.4 | Harden My Heart | 3:51 | Quarterflash | I Haven't Heard That Song in Ages | Various Artists | Album + Compilation | | | CDSM209 |
| 3.4 | Harden My Heart | 3:52 | Quarterflash | Super Juke Box 3000 70’s & 80’s Hits | Various Artists | Album + Compilation | | Universal | UICY-9624/7 |
| 1.10 | Harden my Heart | 3:52 | Quarterflash | One Shot 1981 | Various Artists | Album + Compilation | | Universal | 982 905-5 |
| 2.14 | Harden My Heart | 3:51 | Quarterflash | My Generation - The Soundtrack of Our Lives: The Eighties, Part Two | Various Artists | Album + Compilation | | EMI | 0946 3 44065 2 9, 3440652 |
| 1.12 | Harden My Heart | 3:55 | Quarterflash | 80's Gold: The Rockers | Various Artists | Album + Compilation | | Universal | |
| 3.17 | Harden My Heart | 3:52 | Quarterflash | Classique 80 Nostalgie, Vol. 2 | Various Artists | Album + Compilation | | U.L.M TV Market | 530 252-8 |
| 2.10 | Harden My Heart | 3:52 | Quarterflash | NOW That’s What I Call the 80s Hits (deluxe edition) | Various Artists | Album + Compilation | | Now Joint Venture | |
| 2.12 | Harden My Heart | 3:53 | Quarterflash | American Heartbeat: A Pulsating 80s Rock Collection | Various Artists | Album + Compilation | | Sony BMG Music Entertainment | |
| 2.9 | Harden My Heart | 3:51 | Quarterflash | Top 100 anni ’80 | Various Artists | Album + Compilation | | | |
| 2.7 | Harden My Heart | 3:52 | Quarterflash | Best of Rock Disco, Vol. 2 | Various Artists | Album + Compilation | | Membran Music Ltd. | 232484 |
| 2.7 | Harden My Heart | 3:44 | Quarterflash | Cougar Bourbon: Kickin’ Out the Classics | Various Artists | Album + Compilation | | Cortex | CTX446CD |
| 3.9 | Harden My Heart | 3:49 | Quarterflash | Top 50 - L'anthologie Volume 2 | Various Artists | Album + Compilation | | Play On | 32591 301806 7 |
| 1.8 | Harden My Heart | 3:52 | Quarterflash | MacGruber (Original Motion Picture Soundtrack) | Various Artists | Album + Soundtrack | | Relativity Music Group | RMG1012-1 |
| 1.3 | Harden My Heart | 3:53 | Quarterflash | Best of 1981 - 20th Century Masters | Various Artists | Album + Compilation | | Universal Music Canada | |
| 1.27 | Harden My Heart | 3:52 | Quarterflash | NOW That’s What I Call the 80s Hits (deluxe edition) | Various Artists | Album + Compilation | | Now Joint Venture | |
| 2.20 | Harden My Heart | 3:48 | Quarterflash | More 80 From the 80s | Various Artists | Album + Compilation | | Universal Music Australia | 5335368 |
| 2.17 | Harden My Heart (album version) | 3:49 | Quarterflash | Big Hair Rox | Various Artists | Album + Compilation | | Warner Music Australia | 5249850692 |
| 1.1 | Harden My Heart | 3:53 | Quarterflash | Quarterflash | Quarterflash | Album | | Geffen Records | |
| 3.12 | Harden My Heart | 3:54 | Quarterflash | Rock 80.Let | Various Artists | Album + Compilation | | Universal Music Group | |
| 2.12 | Harden My Heart | 3:52 | Quarterflash | American Heartbeat: A Pulsating 80s Rock Collection | Various Artists | Album + Compilation | | Sony BMG Music Entertainment | |
| 3.19 | Harden My Heart | 3:53 | Quarterflash | These Dreams | Various Artists | Album + Compilation | | | 5346337 |
| 1.4 | Harden My Heart | 3:49 | Quarterflash | The D Train: Original Motion Picture Soundtrack | Various Artists | Album + Soundtrack | | Lakeshore Records | |
| 1.19 | Harden My Heart | 3:50 | Quarterflash | 80 Hits : Années 80 | Various Artists | Album + Compilation | | Universal Music Strategic Marketing | 5361665 |
| 1.32 | Harden My Heart | 3:52 | Quarterflash | The 40 Greatest Power Ballads | Various Artists | Album + Compilation | | TeamRock | |
| 3.15 | Harden My Heart | 3:48 | Quarterflash | Classic Rock: The Ultimate Collection | Various Artists | Album + Compilation | | Union Square Music | ULTIM5CD022 |
| 1.5 | Harden My Heart | 3:50 | Quarterflash | Throwback Tunes: 80s | Various Artists | Album + Compilation | | UMe | |
| 3.15 | Harden My Heart | 3:53 | Quarterflash | Classic Rock Ballads | Various Artists | Album + Compilation | | Rhino , Spectrum Music , UMC | UWCLA031 |
| 1.7 | Harden My Heart | 3:53 | Quarterflash | Rock of the 80’s | Various Artists | Album + Compilation | | Geffen Records, UMe Digital | |
| 2.13 | Harden My Heart | 3:50 | Quarterflash | Soft Rock Forever | Various Artists | Album + Compilation | | | |
| 2.13 | Harden My Heart | 3:50 | Quarterflash | Soft Rock Forever | Various Artists | Album + Compilation | | Universal Music on Demand | |
| 2.14 | Harden My Heart | 3:50 | Quarterflash | Soft Rock Forever | Various Artists | Album + Compilation | | Universal Music Australia | 5384193 |
| 1.5 | Harden My Heart | 3:51 | Quarterflash | 20 #1's: One Hit Wonders | Various Artists | Album + Compilation | | UMe | |
| 3.12 | Harden My Heart | 3:51 | Quarterflash | The Hits Album: The Soft Rock Album | Various Artists | Album + Compilation | | Sony Music | 19075973872 |
| 9.1 | Harden My Heart | 3:51 | Quarterflash | Time Life Loves the ’80s | Various Artists | Album + Compilation | | Time–Life Music | |
| 3.13 | Harden My Heart | 3:51 | Quarterflash | NOW That’s What I Call Power Ballads: Total Eclipse of the Heart | Various Artists | Album + Compilation | | Sony Music | CDNNNOW129 |
| 3.8 | Harden My Heart | 3:53 | Quarterflash | RTL: 50 ans de tubes pop | Various Artists | Album + Compilation | | Label Panthéon , RTL, Universal Music France, Universal Music Strategic Marketing | 539621-9 |
| 1.7 | Harden My Heart | 3:55 | Quarterflash | Drivin’ Rock, Volume 3 | Various Artists | Album + Compilation | | Kenwest Music | |
| 1.1 | Harden My Heart | 3:51 | Quarterflash | Quarterflash | Quarterflash | Album | | Geffen Records | Geffen 2003-2 |
| 1.1 | Harden My Heart | 3:53 | Quarterflash | Quarterflash | Quarterflash | Album | | Geffen Records | 2003-2 |
| 1.3 | Harden My Heart | 3:51 | Quarterflash | Radio Waves of the '80s: Pop Hits | Various Artists | Album + Compilation | | | |
| 2.17 | Harden My Heart | 3:49 | Quarterflash | The Best Soft Rock Album in the World… Ever! | Various Artists | Album + Compilation | | Sony Music | 8852413 |
| Promotion |
|---|
| 1.3 | Harden My Heart | 3:51 | Quarterflash | A Musical History of the Decade 1980–1990 | Various Artists | Album + Compilation | | Geffen Records | |