Lyrics:

Unless you give me your sunny smile
Unless you make living worth the while
Unless you will be so tender to me
Then life will be just empty time

Unless my absence can make you sad
Unless my presence can make you glad
Then there'll never be contentment for me
Unless your heart is mine

First three syllables sung as 'ah-ah-ah' by backups
Give me your sunny smile
First three syllables sung as 'ah-ah-ah' by backups
Make living worth the while
Unless you will be so tender to me
Then life will be just empty time

Unless my absence can make you sad
Unless my presence can make you glad
Then there'll never be contentment for me
Unless your heart is mine, all mine