Hello there, I'm Zivko Kondic - Zhille, and I'm a founder of this group and an alternate tuning user. I've been using the P4 for a while, and I've written an overview introductory lesson on my guitar blog on blogspot. I'd like to share it with you.
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How to tune in P4?
You tune all strings like you tune the
first four, making the open above string sound like the note on the 5th
fret of the lower string. Thus, in “standard P4” you get E, A, D, G, C and F.
So, notes on the open top two strings are a half step higher then on
the standard tuning. It’s like playing in ordinary tuning, but when you
play on the top 2 strings, you move everything one fret back. My
current tuning is B P4, and the notes are B – E – A – D – G – C, that is why I called the E P4 tuning – Standard P4
It needs time to get used to, but I will explain the reasons why this tuning can become a very nice thing in further text.
So, what do I gain by tuning my guitar in Perfect Fourths?
1 – Intervals are consistent visually.All
intervals are fretted the same on every string set. In standard tuning
you have two variations of every interval, that are dependent on
whether the second string is involved, and often variations of
different intervals look the same. In P4 that is not the case. The
fifth of the current note is ALWAYS two frets up on the higher string.
Minor 3rd is always two frets down on the higher string, and so on.
You can read the rest of the entry here:
Feel free to bookmark my blog, but It's been inactive for a while, because I've been preparing a website dedicated solely to the P4 tuning.