C major and minor
The C minor scale: …also has C and F as its first and fourth tones. Here's what a perfect fourth looks like in the keys of C major and minor: Perfect fourth is the term used to describe the distance (aka – “interval”) between the first and fourth tones of the major and minor scale.
Answer:
No set key
Explanation:
There is no set key for a perfect fourth. The tonic and the subdominant of any key must be perfect fourths, and any two notes consisting of five semitones are a perfect fourth. A perfect fourth is also enharmonically equivalent to an augmented third.
