Example—Key: D major
- Key: B flat major
- Key: E major
Method 2: Counting half steps to determine perfect and major intervals
Memorize the chart below for perfect and major intervals—count half steps above the lower note.
P1 = 0 half steps (the same note)
M2 = 2 half steps
M3 = 4half steps
P4 = 5 half steps
P5 = 7 half steps
M6 = 9 half steps (or 3 half steps below the octave)
M7 = 11 half steps (or 1 half step below the octave)
P8 = 12 half steps (octave higher)
Perfect intervals
258
P1 P4M3M2 P5 M6 M7 P8
P1 (same note)
MODULE 10
P4
D G
Count 5 half steps