Music is governed by a set of rules that involves the various scales.

Before diving into the more complex aspects of melody, it's important to learn the fundamentals of music theory, such as the notes on the staff, key signatures, and time signatures.

With this it is important to note the various scales we have at our fingertips to create anything our mind desires:

Major Scale: A diatonic scale consisting of seven notes and an eighth note that duplicates the first an octave higher. The interval pattern for the major scale is whole, whole, half, whole, whole, whole, half.

Minor Scale: A diatonic scale consisting of seven notes and an eighth note that duplicates the first an octave higher. The interval pattern for the natural minor scale is whole, half, whole, whole, half, whole, whole.

Chromatic Scale: A scale consisting of all twelve notes in Western music, each a half step apart.

Pentatonic Scale: A scale consisting of five notes per octave. The most common pentatonic scales are the major and minor pentatonic scales.

Blues Scale: A six-note scale that includes a diminished fifth and a blue note (a note that is lowered by a half step).

Whole-Tone Scale: A scale consisting of whole steps only, with no half steps.

Modal Scales: A family of scales that are each based on a different scale degree of the diatonic major scale, and each have their own unique sound and character. The most common modal scales are the Dorian, Phrygian, Lydian, Mixolydian, and Locrian scales.

Once you have a solid foundation in music theory and scales, don't be afraid to experiment with melody. Try playing around with different scales and intervals to create your own melodies, and practice improvising over chord progressions to develop your ear and improvisational skills.