Perfect 4th - 5 half steps or 1 adjacent string

In this exercise, we find the perfect 4th interval by picking a root note, and then playing a note that is 5 half steps higher.

Then pick that same root note, and play the adjacent string on the same fret, and it should be a perfect 4th between

E-A, A-D, D-G, [NOT G-E] then B-E

My guitar sounds like its out of tune. Sorry. Maybe thats part of ear training, to just be able to hear that something isn’t quite right.

That perfect 4th interval is able to be memorized by using the song Here Comes The Bride as a reference tone.

Practice these perfect 4ths on every string, every pair of adjacent strings, and every fret.

The perfect 4th is one of the most fundamental of all intervals,

The guitar itself is constructed such that there is a perfect 4th offset between most sets of adjacent strings.

So being able to quickly find a perfect 4th from where ever you happen to be will be important to your development as a guitar player.