{{trackliste
| overskrift = UK and US CD single, US cassette single<ref>{{cite AV media notes|title=Only If...|others=[[Enya]]|year=1997|type=UK CD single liner notes|publisher=[[Warner Music Group|WEA]]|id=WEA143CD, 3984 21009 2}}</ref><ref>{{cite AV media notes|title=Only If...|others=Enya|year=1997|type=US CD single liner notes|publisher=[[Reprise Records]]|id=9 17266-2}}</ref><ref>{{cite AV media notes|title=Only If...|others=Enya|year=1997|type=US cassette single sleeve|publisher=Reprise Records|id=9 17266-4}}</ref>
| titel1 = Only If..
| længde1= 3:18
| titel2 = Willows on the Water
| længde2 = 3:02
| titel3 = Oíche Chiún (Silent Night)
| længde3 = 3:45
}}
{{trackliste
| overskrift = UK cassette single and US 7-inch single<ref>{{cite AV media notes|title=Only If...|others=Enya|year=1997|type=UK cassette single sleeve|publisher=WEA|id=WEA143C, 3984 21010 4}}</ref><ref>{{cite AV media notes|title=Only If...|others=Enya|year=1997|type=US 7-inch single vinyl disc|publisher=Reprise Records|id=7-17266}}</ref>
| titel1 = Only If..
| længde1 = 3:18
| titel2 = Oíche Chiún (Silent Night)
| længde2 = 3:45
}}
Musik