This doesn’t make sense to a person who is new to intervals.

“There are 5 terms that describe the quality of intervals: perfect, major, minor, diminished, and augmented. These are the same types of sounds that are used to describe chords. To figure out the quality of intervals we need to look at the interval numbers and qualities in the major scale.

The major scale has two qualities of intervals: perfect and major. The perfect intervals occur on the unison (1st), 4th, 5th, and octave. The major intervals are the 2nd, 3rd, 6th, and 7th. ”

So we know the terms but what do they mean? What makes an interval perfect and why? What makes an interval major and why?

It doesn’t matter if you say, when you raise or lower a perfect or major interval it becomes this or that when you don’t know why it’s a perfect or major interval in the first place.

Why, Man?! Why?!

I kind of get what your saying in regards to intervals, but am a bit confusedf as what they can do for my playing, how could this info help me with my chord progressions for example?

Many thanks