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Sharps and flats are notes that go in between whole notes in the musical alphabet. Learn more in this free music theory video lesson.

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The treble clef is one of two main clefs usually used on the staff, and the staff is a series of lines used in musical notation. Learn more about treble clefs and staffs in this free music theory video lesson on reading music.

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The bass clef is usually used with lower-pitched instruments, while the treble clef is used with instruments that are higher-pitched. Learn the basics of the bass clef in this free music theory video lesson on reading music.

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Ledger lines are used to transition from the bass clef to the treble clef. Learn how to transition between bass clef and treble clef by crossing over middle C in this free music theory video lesson on reading sheet music.