The song Let The Sunshine In is performed by 5th Dimension .
Let the sunshine
Let the sunshine in
The sunshine in X4
Oh everyone sing along
Come on!
Now everybody just sing along
And let the sunshine on in
Open up your heart
And let it shine on you
And when you're lonely
Hey! let it shine, yea
You got to open up your heart
and let it shine on in
When you feel like everythings cheated
And your friends are turning backs upon you
Just open up your heart
and let it shine in
You've got to feel it!