It's smarmy, but I learned this song waaaay back when I was just a little keiki in Pearl Harbor Elementary School.
"...May Day is Lei Day in Hawai`i
Garlands of flowers ev'rywhere,
All of the colors in the rainbow
Maidens with blossoms in their hair
Flowers that mean we should be happy,
Throwing aside a load of care,
Oh, May Day is Lei Day in Hawai`i
Lei Day is happy day out there."
~ Red Hawke, 1928
I just never realized it was such an old song!