Okay here's one that you won't find the answer to in any books. I came upon it accidentally so it might require some digging.
A certain Kappa Delta song, often used during Preference parties, has its origins in two songs. One is by a female singer. The other is by a late 1960's/early 1970's musical teen heartthrob.
What's the KD song?
Who's the female singer?
What's the name of the female singer's song?
Who's the heartthrob?
What's the name of the heartthrob's song?
Hint: Both songs have some of the same tunes and some of the same lyrics.
ETA: Please don't post the answers if you know them right off the bat. Let's see how good our GC KDs are at playing detective.