Some time ago I posted a method for guitar tuning based on piano tuning principles, that is equal temperament. With this method you deliberately introduce some slight imperfections in the tuning between the harmonics of adjacent strings such that the whole instrument is in tune when played across the whole range of keys. (One could argue however that the guitar is never properly in tune in any given key using this method).

Since that time I've had the chance to reflect somewhat more on why it appeals to me. Because of a little jazz training in the last decade I now know my fretboard a lot better and for that reason seldom use a capo these days, even for those bastard keys. With tempered tuning I can move from tune to tune with various modulations without retuning. And my guitar sounds in tune right up and down the fretboard - once I used to wince at the dischords when playing in higher positions and blame the fret locations. In truth there was nothing wrong with my sort of Lowden instrument - only my lack of understanding of its needs.

Hope that this helps someone sometime. Regards, John