Don't use the word lightly

Don't use the word lightly a song by The Browns on Okensaku Music

I heard the Bluebirds sing by The Browns ,
My Isle of Golden Dreams by The Browns ,
The table next to me by The Browns ,
Just in time by The Browns ,
Draggin' Main Street by The Browns ,
I guess I'm crazy by The Browns ,
Looking back to see by The Browns ,
I'll hold you in my heart by The Browns ,
You'll always be in my heart by The Browns ,
Don't use the word lightly by The Browns ,
How can it be imagination by The Browns ,
Sky Princess by The Browns ,