I'm a Believer est écrite et composée par Neil Diamond, qui l'enregistre à plusieurs reprises : en 1967 sur l'album Just for You, en 1979 sur l'album September Morn, et en 2010 sur l'album Dreams. C'est cependant la version des Monkees qui paraît la première, en novembre 1966, et celle qui rencontre le plus grand succès : no 1 aux États-Unis, au Royaume-Uni et dans plusieurs autres pays, leur single s'écoule à plus de dix millions d'exemplaires et reste l'un des plus vendus de tous les temps.

I thought love was only true in fairy tales
Meant for someone else but not for me
Love was out to get me
That's the way it seemed
Disappointment haunted all of my dreams
Then I saw her face, now I'm a believer
Not a trace of doubt in my mind
I'm in love
I'm a believer, I couldn't leave her if I tried
I thought love was more or less a giving thing
Seems the more I gave the less I got
What's the use in tryin'
All you get is pain?
When I needed sunshine, I got rain
Then I saw her face, now I'm a believer
Not a trace of doubt in my mind
I'm in love
I'm a believer, I couldn't leave her if I tried
Oh
Oh, love was out to get me
Now, that's the way it seemed
Disappointment haunted all of my dreams
Then I saw her face, now I'm a believer
Not a trace of doubt in my mind
I'm in love
I'm a believer, I couldn't leave her if I tried
Yes, I saw her face, now I'm a believer
Not a trace of doubt in my mind
Said, I'm a believer, yeah, yeah, yeah, yeah, yeah, yeah (I'm a believer)
Said, I'm a believer, yeah (I'm a believer)
I said, I'm a believer, yeah (I'm a believer)
Paroliers : Neil Diamond