‹ MusicTheory · Intervals · 5 of 14
Fourths, fifths and octaves
About 5 minutes
A perfect fourth is 5 half steps, a perfect fifth is 7, an octave is 12. They sound open and stable, which is why they are called perfect.
The power chord you played is a root and a fifth. Two strings next to each other on the guitar, except G to B, are a fourth apart.
From A (open A string): D is a fourth, E a fifth, A an octave.
Name the interval
To pass: four out of five right.
Name the interval · 1 of 10
0 right