# Lesson 9

# Triad Lesson. In this lesson, we will use
# melodic and harmonic intervals to play
# triads and inversions, blocked and broken.

# General Instructions:
#
# This lesson contains two examples and
# three exercises (A, B, C).
#
# To listen to an example, change "comment"
# to "uncomment" on the "comment do" line,
# then click the "Run" menu command at the
# top of the Sonic Pi editor window.
# When you are done with the example, turn
# it off by changing "uncomment" back to
# "comment," and move on to the next section
# of the lesson.
#

# Example 1: Root Position Triads - blocked:

comment do
  minor_third = 3
  major_third = 4
  perfect_fifth = 7

  # C Major
  play :C
  play :C + major_third
  play :C + perfect_fifth
  sleep 1

  # C minor
  play :C
  play :C + minor_third
  play :C + perfect_fifth
  sleep 1

  # G Major
  play :G
  play :G + major_third
  play :G + perfect_fifth
  sleep 1

  # G minor
  play :G
  play :G + minor_third
  play :G + perfect_fifth
  sleep 1

end

# Exercise A:
#   Change Example 1 to play these
#   root-position triads:
#     1) D major
#     2) D minor
#     3) F major
#     4) F minor
#     5) Bb major
#     6) Bb minor
#     7) F# major
#     8) F# minor

# Example 2: Triad inversions (broken):

comment do
  minor_third = 3
  major_third = 4
  perfect_fourth = 5
  perfect_fifth = 7
  minor_sixth = 8
  major_sixth = 9

  # C Major 1st inversion
  play :E
  sleep 1
  play :E + minor_third
  sleep 1
  play :E + minor_sixth
  sleep 1

  # C Major 2nd inversion
  play :G
  sleep 1
  play :G + perfect_fourth
  sleep 1
  play :G + major_sixth
  sleep 1

  # G Major 1st inversion
  play :B
  sleep 1
  play :B + minor_third
  sleep 1
  play :B + minor_sixth
  sleep 1

  # G Major 2nd inversion
  play :D
  sleep 1
  play :D + perfect_fourth
  sleep 1
  play :D + major_sixth
  sleep 1

end

# Exercise B:
#   Change Example 2 to play these triads:
#     1) D major 1st inversion
#     2) D minor 2nd inversion
#     3) F major 1st inversions
#     4) F minor 2nd inversion
#     5) Bb major 2nd inversion
#     6) Bb minor 1st inversion
#     7) F# major 2nd inversion
#     8) F# minor 1st inversion

# Exercise C:
#   Change Example 2 (changed version from
#   Exercise B) to play triad inversions
#   using note names only; do not add intervals
#   to the bottom note. 
#