106: Music Theory Mini Lesson: What is a Key Signature? for homeschooling families

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Have you ever looked at a piece of sheet music and wondered what those sharps and flats at the beginning actually mean?

In today’s episode of the Music in Our Homeschool podcast, I’m sharing a 10-minute excerpt from one of our live 30-minute music lessons where we answer a foundational question in music education: What is a key signature?

If you’re a homeschool parent wanting to confidently teach music theory—even if you don’t read music fluently yourself—this episode will give you simple, clear explanations you can immediately use with your children.

In this lesson, we explore:

• What sharps and flats mean at the beginning of a piece
• Why key signatures make music easier to read
• How the piano keyboard helps us visualize keys
• The 12 notes in Western music
• The pattern of whole and half steps in a major scale
• A simple introduction to the Circle of Fifths
• The difference between major and minor
• A fun listening game to identify the “home” note of a song

This is a short excerpt from a full-length music lesson available inside Music in Our Homeschool Plus (or available as a separate purchase here: https://MusicinOurHomeschool.com/Feb2026. 

At the accompanying blog post, can grab the printable pack that goes along with this lesson, purchase the full class, or join the membership for ongoing music education support.

If you’ve ever felt unsure about teaching music theory in your homeschool, this episode will help you take that first confident step.

Find links to all resources mentioned in this episode here: https://musicinourhomeschool.com/what-is-a-key-signature/

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