In music an interval is the distance between two notes represented by the number of steps between two notes. For example, from C to D the interval is a "second", C to E is a "third", etc. What is fascinating to know is that a single tone is actually a "blend" of other pitches which are higher frequency pitches that accompany the fundamental pitch or single sound you hear. Overtones are not heard, but compliment the fundamental (I know sounds weird). This "blending" of overtones is what gives music the ability to create a tension and release in our ears allowing melodies and chords to have attraction to other sounds creating a push/pull in music. In short, overtones allow melody and harmony to function as ‘good citizens’ to our ears. Learn more about music @kellymusicworks.