Root progression refers to how the different chords in a song or music piece go from one to another. It's kind of like a story, where each chord is a different chapter that leads to the next one.
Think of it like building a tower with blocks. You start with one block, then add another one on top, and keep doing that until you have a really tall tower. With root progression, you start with one chord, then add another one, and keep going until you have a whole song.
There are different types of root progression, but one common way is called "chord changes." This means that you start with one chord, then change to a different one, and keep doing that throughout the song. It's like switching blocks in your tower to make it taller.
Sometimes, the chords you use will create a certain feeling or mood. For example, if you use a lot of minor chords in your root progression, it might sound sad or melancholy. If you use a lot of major chords, it might sound happier or more upbeat.
Overall, root progression is an important part of music and can help create a certain vibe or mood. Like building a tower with blocks, it takes time and practice to get it just right.