Here's a sometimes useful technique for stringing acoustic guitars. I'm sure most of you probably know about this but for those who don't I'll explain: Whenever I'm doubling acoustic guitar parts I keep a guitar around with Nashville tuning which is basically a six string that is strung only with the "octave" strings out of a twelve-string set. The E, A, D, and G strings are an octave higher and the B and high E are standard. Sometimes the Nashville guitar is the only one I need becase it has a nice bright acoustic sound but takes up less room in the mix; especially good for mixes that already have a lot going on. It also works well for electric, but I think it's better for Strat sounding things that aren't too distorted...also where I'm going to be strumming across all six strings. It doesn't do much for two and three note barre chords. Just remember not to leave the guitar strung that way for too long unless the truss rod has been appropriately adjusted.
