'Endless' is right, F'troupe.

Hi, Jay. Are you interested in playing a dulcimer, or just interested in the Phrygian mode in general?

Either way, there are three kinds of modes. So far. The ancient Greek, the medieval or the modern.

I won't talk about the ancient Greek because who knows what their music sounded like? The sixth and seventh notes of the modern scale weren't even pinned down till around 1200 AD.

So - in the medieval or modern systems, to make a Phrygian song, you take a major scale, any key you want.

do re mi fa so la ti do

Now compose a tune that starts on mi, ends on mi, has a longest, highest (or lowest) note on mi, and you will have a Phrygian tune in its purest form.

I found one of these in an old Lutheran hymnal the other day. It was by Thomas Tallis (16th C.) and was simply called Third Mode Melody.