| Official |
|---|
| 1.1 | It's Impossible | 3:14 | Perry Como | It's Impossible | Perry Como | Album | | RCA Victor | LSP-4473 |
| 1.19 | It’s Impossible | 3:13 | Perry Como | Exclusive World Stars From the 50's & 60's | Various Artists | Album + Compilation | | EVA | 259.067 |
| 1.12 | It’s Impossible | 3:18 | Perry Como | Stereoplay Spezial CD 28: Entertainment | Various Artists | Album + Compilation | | stereoplay | CD 697 028 |
| 1.19 | It’s Impossible | 3:13 | Perry Como | The Originals 3: World Stars (From the 50's and 60's) | Various Artists | Album + Compilation | | EVA | 259.067 |
| 1.4 | It’s Impossible | 3:16 | Perry Como | Nipper’s Greatest Hits: The 70’s | Various Artists | Album + Compilation | | RCA | 9864-2-R |
| 1.7 | It's Impossible | 3:18 | Perry Como | Perry Como | Perry Como | Album + Compilation | | Ariola Express | 295 038 |
| 2.22 | It’s Impossible | 3:18 | Perry Como | Memories in Gold | Various Artists | Album + Compilation | | | |
| 1.1 | It's Impossible | 3:16 | Perry Como | Pure Gold | Perry Como | Album + Compilation | | RCA | 0972-2-R |
| 1.13 | It's Impossible | 3:19 | Perry Como | The Society of Singers Presents The Best Of The Golden Voices | Various Artists | Album + Compilation | | Columbia House | |
| 1.11 | It’s Impossible | 3:16 | Perry Como | Stereoplay CD 63 Special: Entertainment, Volume 2: Easy Listening Favourites | Various Artists | Album + Compilation | | stereoplay | CD 27100630A |
| 1.20 | It's Impossible | 3:17 | Perry Como | Remember When... ...Singers Could Really Sing | Various Artists | Album + Compilation | | The Hit Label | AHLCD3 |
| 1.13 | It's Impossible | 3:19 | Perry Como | My Greatest Songs | Perry Como | Album + Compilation | | RCA | 74321 10725 2 |
| 3.12 | It’s Impossible | 3:17 | Perry Como | Yesterday & Today: A Celebration in Song | Perry Como | Album + Compilation | | RCA | 0786366098-2 |
| 1.9 | It’s Impossible | 3:20 | Perry Como | The Many Moods of Romance: That’s My Desire | Various Artists | Album + Compilation | | Time–Life Music | R974-01, TCD-300 |
| 1.2 | It's Impossible | ?:?? | Perry Como | Always | Various Artists | Album + Compilation | | Time-Life | TL 581/01 |
| 1.2 | It's Impossible | 3:17 | Perry Como | Always | Various Artists | Album + Compilation | | Time–Life Music | TL581/01 |
| 1.14 | It’s Impossible | 3:16 | Perry Como | The Best of Entertainment | Various Artists | Album + Compilation | | stereoplay | |
| 1.8 | It's Impossible | 3:17 | Perry Como | The Love Collection | Perry Como | Album + Compilation | | | 74321 393422 |
| 1.2 | It’s Impossible | 3:17 | Perry Como | To Mom With Love | Various Artists | Album + Compilation | | RCA | 66859-2 |
| 1.3 | It's Impossible | 3:15 | Perry Como | Catch a Falling Star | Perry Como | Album + Compilation | | Bellaphon | 287.07.246 |
| 2.11 | It's Impossible | 3:17 | Perry Como | A Classic Collection | Perry Como | Album + Compilation | | BMG Special Products | dmc22080 |
| 1.15 | It’s Impossible | 3:19 | Perry Como | Perry Como The Ultimate Collection (disc 1) | Perry Como | Album + Compilation | | BMG International | |
| 2.24 | It's Impossible | 3:16 | Perry Como | Greatest Hits | Perry Como | Album + Compilation | | RCA | 07863 67436-2 |
| 2.24 | It’s Impossible | 3:16 | Perry Como | Greatest Hits | Perry Como | Album + Compilation | | RCA | |
| 1.22 | It’s Impossible | 3:15 | Perry Como | Music to Watch Girls By, Volume 3 | Various Artists | Album + Compilation | | Sony Music TV | SONYTV96CD |
| 1.15 | It’s Impossible | 3:15 | Perry Como | Legendary | Perry Como | Album + Compilation | | BMG | 743217531126 |
| 4.15 | It’s Impossible | 3:17 | Perry Como | Memories Are Made of This | Various Artists | Album + Compilation | | Reader’s Digest | C-093C |
| 1.21 | It's Impossible | 3:17 | Perry Como | The Definitive Perry Como Collection | Perry Como | Album + Compilation | | BMG International | 74321727112 |
| 1.20 | It's Impossible | 3:17 | Perry Como | The Very Best of Perry Como | Perry Como | Album + Compilation | | RCA | 07863 67968-2 |
| 1.11 | It's Impossible | 3:17 | Perry Como | And I Love You So / It's Impossible | Perry Como | Album + Compilation | | BMG Special Products | COL-CD-2767 |
| 1.2 | It's Impossible | 3:18 | Perry Como | Gold: Greatest Hits | Perry Como | Album + Compilation | | BMG UK & Ireland | 74321 865542 |
| 4.15 | It’s Impossible | 3:17 | Perry Como | Memories Are Made of This | Various Artists | Album + Compilation | | BMG Music Canada Inc., Reader’s Digest Music | 3432 |
| 1.20 | It’s Impossible | 3:19 | Perry Como | SATURN Exklusiv Edition: Easy Listening Edition | Various Artists | Album + Compilation | | Brunswick | 069 863-2 |
| 1.8 | It's Impossible | 3:17 | Perry Como | Platinum & Gold Collection | Perry Como | Album + Compilation | | A&M Records | 82876 51293 2 |
| 1.6 | It's Impossible | 3:16 | Perry Como | The Best of Perry Como | Perry Como | Album + Compilation | | RCA Camden | 82876 507742 |
| 1.1 | It's Impossible | 3:17 | Perry Como | The Essential | Perry Como | Album + Compilation | | Jive | 82876560172 |
| 2.17 | It’s Impossible | 3:17 | Perry Como | Unforgettable: The Ultimate Ballad Collection | Various Artists | Album + Compilation | | Reader’s Digest | |
| 1.5 | It's Impossible | 3:17 | Perry Como | Lifetime of Romance: Some Enchanted Evening | Various Artists | Album + Compilation | | Time–Life Music | 19719-2 |
| 1.13 | It’s Impossible | 3:17 | Perry Como | Timeless | Various Artists | Album + Compilation | | DMG TV | DMGTV009 |
| 1.4 | It’s Impossible | 3:14 | Perry Como | 100 Hits Love Story | Various Artists | Album + Compilation | | RMG Records | RMG 1286 MP3 |
| 1.15 | It’s Impossible | 3:14 | Perry Como | Legends | Perry Como | Album + Compilation | | BMG | 82876 637072 |
| 2.15 | It's Impossible | 3:18 | Perry Como | Lifetime of Romance: Falling in Love | Various Artists | Album + Compilation | | Time–Life Music | TL LRS/03 |
| 2.5 | It’s Impossible | 3:17 | Perry Como | Music of Your Life: Some Enchanted Evening | Various Artists | Album + Compilation | | Time–Life Music | 26698-D |
| 4.8 | It’s Impossible | 3:16 | Perry Como | The Romantic Collection | Various Artists | Album + Compilation | | Reader’s Digest | RDCD 4291-5 |
| 1.3 | It's Impossible | 3:16 | Perry Como | The Very Best Of Perry Como | Perry Como | Album + Compilation | | RCA | 82876616572 |
| 1.13 | It’s Impossible | 3:17 | Perry Como | Timeless: A Collection of 54 Classic Performances | Various Artists | Album + Compilation | | DMG TV | DMGTV 009 |
| 2.1 | It’s Impossible | 3:18 | Perry Como | Memories ...Are Made of This, Part Two | Various Artists | Album + Compilation | | | |
| 1.15 | It's Impossible | 3:16 | Perry Como | A Night on the Town: Swinging Tracks From the Rat Pack Era | The Rat Pack | Album + Compilation | | EMI Music | 0946 3 30211 2 9 |
| 1.7 | It’s Impossible | 3:18 | Perry Como | Lifetime of Romance | Various Artists | Album + Compilation | | Time–Life Music | |
| 1.5 | It's Impossible | 3:17 | Perry Como | Lifetime of Romance | Various Artists | Album + Compilation | | Time–Life Music | |
| 3.2 | It’s Impossible | 3:16 | Perry Como | 100 Hits: 70s | Various Artists | Album + Compilation | | 100 Hits | DMG 100 002 |
| 1.17 | It’s Impossible | 3:19 | Perry Como | Romancing the 70s, Volume 3: Precious and Few | Various Artists | Album + Compilation | | Time–Life Music | 24010-D A738190 |
| 1.4 | It's Impossible | 3:16 | Perry Como | Very Best Of | Perry Como | Album + Compilation | | Sony Music | 88697317552 |
| 2.14 | It's Impossible | 3:15 | Perry Como | The Pop Years: 1970-1971 | Various Artists | Album + Compilation | | Crimson Productions | CRIMPOP701 |
| 2.14 | It’s Impossible | 3:15 | Perry Como | Ultimate 70s: 60 Classic Tracks of the Decade | Various Artists | Album + Compilation | | Music Club , Demon Music Group | MCCDULT002 |
| 1.4 | It’s Impossible | 3:17 | Perry Como | Latest & Greatest Crooners | Various Artists | Album + Compilation | | | |
| 7.15 | It’s Impossible | 3:15 | Perry Como | Back to the 70’s | Various Artists | Album + Compilation | | Sony Music | 88697818922 |
| 2.14 | It's Impossible | 3:15 | Perry Como | The Pop Years: The 70s | Various Artists | Album + Compilation | | Crimson Productions | CRIMPOP706 |
| 1.4 | It’s Impossible | 3:17 | Perry Como | Music of Your Life | Various Artists | Album + Compilation | | Zestify | MLH03 |
| 1.5 | It’s Impossible | 3:17 | Perry Como | Music of Your Life | Various Artists | Album + Compilation | | Time–Life Music | |
| 3.3 | It’s Impossible | 3:15 | Perry Como | 100 Hits: Supreme 70s | Various Artists | Album + Compilation | | Demon Music Group | DMG 100 142 |
| 1.43 | It’s Impossible | 3:15 | Perry Como | 100 Hits: Supreme 70s | Various Artists | Album + Compilation | | Demon Music Group | [none] |
| 5.16 | It’s Impossible | 3:16 | Perry Como | 100 Hits: Just Be Good to Me | Various Artists | Album + Compilation | | 100 Hits | DMGN 100 187 |
| 2.18 | It’s Impossible | 3:15 | Perry Como | Music to Watch Girls By | Various Artists | Album + Compilation | | Sony Music , Universal Music Catalogue | 19075973892 |
| 5.3 | It’s Impossible | 3:14 | Perry Como | NOW 100 Hits: Forgotten 70s | Various Artists | Album + Compilation | | Sony Music , Universal Music on Demand, NOW | 0194397059625, CDNNNOW92 |
| 3.21 | It’s Impossible | 3:16 | Perry Como | 40 Years of Golden Memories | Various Artists | Album + Compilation | | Reader’s Digest | RDC 91641 - 4 |
| 1.10 | It's Impossible | 3:17 | Perry Como | All Time Greatest Hits | Perry Como | Album + Compilation | | | |
| 1.10 | It’s Impossible | 3:17 | Perry Como | Great Stars and Their Greatest Songs | Various Artists | Album + Compilation | | Reader’s Digest | |
| 3.10 | It's Imposible | 3:17 | Perry Como | Magic Moments | Various Artists | Album + Compilation | | Compact Disc Club | |
| 5.4 | It’s Impossible | 3:17 | Perry Como | Music of Your Life | Various Artists | Album + Compilation | | Time-Life | |
| 1.16 | It's Impossible | 3:16 | Perry Como | New York Collection, 1970 | Various Artists | Album + Compilation | | amc records | NYC 1970 |
| 2.24 | It’s Impossible | 3:17 | Perry Como | Perry Como’s Greatest Hits | Perry Como | Album + Compilation | | RCA | |
| 1.1 | It's Impossible | 3:16 | Perry Como | The Best of Perry Como | Perry Como | Album + Compilation | | | |
| 1.11 | It's Impossible | 3:20 | Perry Como | The Love Songs, Volume 3 | Various Artists | Album + Compilation | | | |
| Promotion |
|---|
| 1.4 | It’s Impossible | 3:14 | Perry Como | Winston’s Summer’s Best Music Collection: 70’s | Various Artists | Album + Compilation | | BMG Direct Marketing, Inc. , RCA Special Products | DPC1-0816W |
| (unknown) |
|---|
| 2.11 | It's Impossible | 3:17 | Perry Como | 40 Greatest Hits | Perry Como | Album + Compilation | | K‐tel | NE 700 |
| 1.11 | It's Impossible | 3:17 | Perry Como | 20 Greatest Hits | Perry Como | Album + Compilation | | | |
| 1.2 | It's Impossible | 3:16 | Perry Como | Alta fedeltà | Various Artists | Album + Compilation | | | |
