In this lesson you will see a Perfect 4th lit up on your instrument and you will write it in music notation.
![](/files/tutorials/theory/intervals/05/perfect_4th_notation.jpg)
![](/files/tutorials/theory/intervals/05/perfect_4th_notation.jpg)
As with all intervals, there may be more than one way to spell it, but only one way is correct.
![](/files/tutorials/theory/intervals/05/p4_spelling.jpg)
It is important to choose a spelling so that the letters add up to a Fourth.
![](/files/tutorials/theory/intervals/05/p4_spelling.jpg)
The first example is correct because G to C is a fourth.
![](/files/tutorials/theory/intervals/05/p4_spelling.jpg)
The second example is incorrect because A to C is a third.
![](/files/tutorials/theory/intervals/05/p4_spelling.jpg)
Please press the Exercise button below.