Lilt
The direction of melody is simply called it's motion.
There is no saint named Melodie.
The term for a second melody that accompanies the main melody in a musical composition is called a "counterpoint."
It is not. You can change the different sounds it makes, but you can't alter the pitches to make a melody. However, maybe if you got a bunch of them, you might find ones with different pitches and can make a melody out of that!! =) If you're looking for that light, high-pitched sound to make a melody with, an instrument called a Bell Kit or a Glockenspiel would be for you! Hope this helps!!
The main tune is called the "head." It establishes the chord structure and overall theme.
melody
a melody
phrase
Phrase
there are different words: mix overlap mash up melody 1 & 2
The "A" melody
In opera an aria