ELI5: Explain Like I'm 5

Ladder of thirds

The ladder of thirds is a system used in music to help people pick out notes that sound good together when played at the same time. It’s like a ladder that has rungs made up of notes, with each rung being made up of three notes that are all a certain distance apart from each other.

Think of it like climbing a ladder, but instead of just going up or down, you’re picking out notes as you go. Each rung on the ladder is made up of three notes that are “stacked” on top of each other.

The ladder of thirds is written out in a special way, with each rung of notes being written as a chord that has a certain name, like “C major” or “G minor”. Each chord has a different sound, and they all sound good together when played in a certain order.

So, if you want to write a song or play a piece of music, you can use the ladder of thirds to help you pick out notes that will sound good together. It’s like having a set of stairs to climb up and down while you play, making it easier to create beautiful music.
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