Flamenco Gitanos don't go to universities (and many musicians in many, many other cultures), and they use modulation from day one....
They develop an ear for it through the chord progressions, and in scale melodies only in so far as they follow the chord progressions, rather than vice versa.
That is, they fit the melodies to the chord progressions, rather than fitting chord progressions to the melodies....
Most folk music is this way, since singers (especially when improvising) follow well defined chord progressions (Flamenco, 12 bar Blues, Greek Syrto, etc., etc.) The music that is not tends to be very boring ("little houses, on the hillside, little boxes made of ticky-tacky)....
Depends if you want to write music for an orchestra (build an arrangement around a melody) or sing folk songs around the campfire (accompany melody with chord progressions)....
Flamenco (and Rock) use a lot of power chords (root, 5th) based on basic chord progressions (but modulate - especially Flamenco, Greek, etc. - and all this music can be accompanied with guitar)..
Finally, many classical compositions have their roots in the folk musics of their origins. (e.g. Bach variations built on musical progressions similar to church choir music, which was very familiar to his listeners)
In fact, that's why I wrote my take on it: you wouldn't BELIEVE the crap "trained musicians" wrote when they tried to analyze Flamenco... For those interested (humbly - well, ok, maybe not

:
http://www.flamencochuck.com/files/Musi ... Theory.pdf
I well remember trying to figure out Flamenco from Walter Piston early on (in the early 70's) ...
(And still sometimes write about blues vs. jazz) And what I wrote applies to much of folk music from all over the world, especially when people get together and sing (well, ok, if anyone still does that) ...
stringtapper wrote:All due respect, but someone with little to no knowledge of music theory shouldn't be starting with modulation. Most universities don't start modulation until the second or third semester of theory.
Start with the fundamentals: keys, scales, diatonic chords in major and minor. Learn to spell triads and seventh chords on any scale degree in any key.
Then move on to inversions of triads and seventh chords. Of all music fundamentals, inversions are one of the key ingredients to creating more organic motion in your harmony. Understanding why and how certain inversions are used in the context of harmonic progressions is key to creating more sophisticated textures. At its core it's all about how a particular chord relates to the note in the bass.
Lots of pop music uses only parallel root position harmony and this what makes it often sound comparatively sterile relative to the works of the classical masters or pop composers who have studied music intensively.