Final answer:
The two predominant scales in Western music are the major and minor scales, providing the tonal foundation for a diverse range of music and conveying various emotions.
Step-by-step explanation:
In Western music, the two predominant scales are the major and minor scales. These scales are the foundation of a vast body of music and are central to Western musical theory. A major scale is often associated with a brighter, happier sound, while a minor scale typically conveys a sadder, more somber tone.
Notable examples of these scales in use include the joyous melodies of a major key in many pop songs or the haunting phrases of a minor key in pieces like Beethoven's Für Elise. Understanding the characteristics of major and minor scales helps musicians convey a range of emotions and nuances through their compositions.