Harmony is really important in popular music, and knowing about it can make your listening experience a lot better. Here’s why harmony matters:

1. Heartfelt Feelings: Harmony helps set the mood of a song. Major chords can make us feel happy, while minor chords often bring out feelings of sadness or thoughtfulness. This layer of emotion makes the music richer and more enjoyable.

2. Supporting the Tune: You can think of harmony as a support for the melody. If a song only has a melody without chords, it can feel empty or unfinished. But when a catchy tune is played with nice chords, it creates that pleasing sound we all enjoy.

3. Movement and Excitement: Chord progressions bring movement to music. For example, the popular $I-IV-V$ progression (like C-F-G in C major) creates a sense of tension and resolution. This keeps listeners interested and wanting to hear more.

4. Different Styles and Imagination: Different music styles use harmony in their own ways. Jazz often explores complicated chords and surprising changes, while pop music usually sticks to simple and catchy progressions. This variety makes music exciting and new.

In summary, harmony and chords are key parts of music that shape how we feel and improve our listening experience. Understanding these elements helps us enjoy our favorite songs even more!