Lyrics of I let a song out of my heart

I let a song go out of my heart
It was the sweetest melody
I know i lost heaven
'cause you were the song
Since you and i had drifted apart
Life doesn't mean a thing to me
Please come back sweet music
I know i was wrong
Am i too late
To make amends
You know that we were meant to be
More than just friends, just friends
I let a song go out of my heart
Believe me darling when i say
I won't know sweet music
Until you return someday