Melody is one of the most basic elements of music. A note is a sound with a particular pitch and duration. String a series of notes together, one after the other, and you have a melody. But the melody of a piece of music isn't just any string of notes. It's the notes that catch your ear as you listen; the line that sounds most important is the melody. There are some common terms used in discussions of melody that you may find it useful to know. First of all, the melodic line of a piece of music is the string of notes that make up the melody. Extra notes, such as trills and slides, that are not part of the main melodic line but are added to the melody either by the composer or the performer to make the melody more complex and interesting are called ornaments or embellishments. Below are some more concepts that are associated with melody.
A melody that stays on the same pitch gets boring pretty quickly. As the melody progresses, the pitches may go up or down slowly or quickly. One can picture a line that goes up steeply when the melody suddenly jumps to a much higher note, or that goes down slowly when the melody gently falls. Such a line gives the contour or shape of the melodic line. You can often get a good idea of the shape of this line by looking at the melody as it is written on the staff, but you can also hear it as you listen to the music.
You can also describe the shape of a melody verbally. For example, you can speak of a "rising melody" or of an "arch-shaped" phrase. Please see The Shape of a Melody for children's activities covering melodic contour.
Another set of useful terms describe how quickly a melody goes up and down. A melody that rises and falls slowly, with only small pitch changes between one note and the next, is conjunct. One may also speak of such a melody in terms of step-wise or scalar motion, since most of the intervals in the melody are half or whole steps or are part of a scale.
A melody that rises and falls quickly, with large intervals between one note and the next, is a disjunct melody. One may also speak of "leaps" in the melody. Many melodies are a mixture of conjunct and disjunct motion.
Melodies are often described as being made up of phrases. A musical phrase is actually a lot like a grammatical phrase. A phrase in a sentence (for example, "into the deep, dark forest" or "under that heavy book") is a group of words that make sense together and express a definite idea, but the phrase is not a complete sentence by itself. A melodic phrase is a group of notes that make sense together and express a definite melodic "idea", but it takes more than one phrase to make a complete melody.
How do you spot a phrase in a melody? Just as you often pause between the different sections in a sentence (for example, when you say, "wherever you go, there you are"), the melody usually pauses slightly at the end of each phrase. In vocal music, the musical phrases tend to follow the phrases and sentences of the text. For example, listen to the phrases in the melody of "The Riddle Song" and see how they line up with the four sentences in the song.
Figure 2.3. The Riddle Song
But even without text, the phrases in a melody can be very clear. Even without words, the notes are still grouped into melodic "ideas". Listen to the first strain of Scott Joplin's "The Easy Winners" to see if you can hear four phrases in the melody.
One way that a composer keeps a piece of music interesting is by varying how strongly the end of each phrase sounds like "the end". Usually, full-stop ends come only at the end of the main sections of the music. (See form and cadence for more on this.) By varying aspects of the melody, the rhythm, and the harmony, the composer gives the ends of the other phrases stronger or weaker "ending" feelings. Often, phrases come in definite pairs, with the first phrase feeling very unfinished until it is completed by the second phrase, as if the second phrase were answering a question asked by the first phrase. When phrases come in pairs like this, the first phrase is called the antecedent phrase, and the second is called the consequent phrase. Listen to antecedent and consequent phrases in the tune "Auld Lang Syne".
Figure 2.4. Antecedent and Consequent Phrases
Of course, melodies don't always divide into clear, separated phrases. Often the phrases in a melody will run into each other, cut each other short, or overlap. This is one of the things that keeps a melody interesting.
Another term that usually refers to a piece of melody (although it can also refer to a rhythm or a chord progression) is "motif". A motif is a short musical idea - shorter than a phrase - that occurs often in a piece of music. A short melodic idea may also be called a motiv, a motive, a cell, or a figure. These small pieces of melody will appear again and again in a piece of music, sometimes exactly the same and sometimes changed. When a motif returns, it can be slower or faster, or in a different key. It may return "upside down" (with the notes going up instead of down, for example), or with the pitches or rhythms altered.
Most figures and motifs are shorter than phrases, but some of the leitmotifs of Wagner's operas are long enough to be considered phrases. A leitmotif (whether it is a very short cell or a long phrase) is associated with a particular character, place, thing, or idea in the opera and may be heard whenever that character is on stage or that idea is an important part of the plot. As with other motifs, leitmotifs may be changed when they return. For example, the same melody may sound quite different depending on whether the character is in love, being heroic, or dying.
Counterpoint has more than one melody at the same time. This tends to change the rules for using and developing melodies, so the terms used to talk about contrapuntal melodies are different, too. For example, the melodic idea that is most important in a fugue is called its subject. Like a motif, a subject has often changed when it reappears, sounding higher or lower, for example, or faster or slower. For more on the subject (pun intended), please see Counterpoint.
A longer section of melody that keeps reappearing in the music - for example, in a "theme and variations" - is often called a theme. Themes generally are at least one phrase long and often have several phrases. Many longer works of music, such as symphony movements, have more than one melodic theme.
Figure 2.7. Theme from Beethoven's Symphony No. 9
The musical scores for movies and television can also contain melodic themes, which can be developed as they might be in a symphony or may be used very much like operatic leitmotifs. For example, in the music John Williams composed for the Star Wars movies, there are melodic themes that are associated with the main characters. These themes are often complete melodies with many phrases, but a single phrase can be taken from the melody and used as a motif. A single phrase of Ben Kenobi's Theme, for example, can remind you of all the good things he stands for, even if he is not on the movie screen at the time.
Melody is a particularly easy concept to convey to children, since attention to a piece of music is naturally drawn to the melody. If you would like to introduce some of these concepts and terms to children, please see A Melody Activity, The Shape of a Melody, Melodic Phrases, and Theme and Motif in Music.