tailieunhanh - Music Theory FundamentalsSection 2.1

The lower tetrachord and the upper tetrachord each follow the major tetrachord pattern: W-W-h, with a whole step between them. To visualize the whole step/half step pattern shown above, review The Chromatic Scale and the Piano. Remember that E to F and B to C are natural half steps (no accidentals needed). | 30 Lea inMM Theo High-Yield Music Theory Vol. 1 Music Theory Fundamentals Section Major Scales C major scale The white piano keys from C to C form a C major scale. These eighth notes C D E F G A B and then C again divide into two four-note scale Tetrachord segments called tetrachords A C D E F G A BC o 3 l whole whole half whole whole whole half I 2 I I I lower tetrachord upper tetrachord Major tetrachord The lower tetrachord and the upper tetrachord each follow the major tetrachord pattern W-W-h with a whole step between them. To visualize the whole step half step pattern shown above review The Chromatic Scale and the Piano. Remember that E to F and B to C are natural half steps no accidentals needed . Key of C major A piece of music that uses the C major scale for its melodies and harmonies is in the key of C major. The major scale can also start on notes other than C as long as it follows the correct pattern of whole steps and half steps W- G major scale W-h then W then W-W-h again. A G major scale requires F sharp to create the E-F sharp whole step since E to F is a natural half step. A G a B C D E F G w w w w w w 1 .W W h W W W h lower tetrachord upper tetrachord Key signature A key signature indicates the accidentals for the key at the start of each line of music instead of next to each note. . _ . The sharp is in the key signature G ma or key signature so we don t need it here. AVG a B C D E If g 1 W W h 1 W 1 W W h 1 Chapter 2 Major and Minor Scales and Keys 31 D major scale G is the fifth scale note in C major and the G major scale has one more sharp than C major. Changing the key to the fifth scale note of a particular scale always adds a sharp or takes away a flat . Since D is the fifth scale note of G G A B C D the D major scale uses two sharps. The added sharp is always one scale note below the new key. A major E major Continuing up 5 add a sharp A major has three sharps E major has four and so on. Again the new sharp in the key .