Actually, I lied: I’ll get back to the tuning stuff tomorrow. Today I’d like to talk very quickly about double-tracking acoustic guitars.
All the reasons that you might double electric guitar parts can apply equally to acoustic guitars parts: you could do it to provide width, to blend different voicings of the same chords, or to blend the tones of two different instruments to create a sound that wouldn’t be obtainable any other way, and so on. The practice of mass acoustic overdubbing is somewhat rarer than it is with electric guitar parts, though, which might be for no other reason than the fact that it’s more difficult to do well.
Acoustic guitar is an extremely percussive instrument. When you record two of them (whether you personally record two parts or the two guitarists in your band record one track each), it becomes very important that the two parts are in time with each other and in time with the snare drum. The further out the strums are, the more the ear is likely to hear them as flams. This can get distracting for the listener pretty quickly.
If you’re undeterred, though, here’s a couple of tips. Blending a standard-tuned part with an open tuned part can be fun. Imagine using one of the C tunings I talked about yesterday in the context of a song where the main progression is something like C/dminor/aminor/G: you can create a rich, resonant blend that wouldn’t be possible from two standard-tuned parts, really taking advantage of the drone strings and the low C bass. And of course, the effect of this will be even greater if the open-tuned part happened to be played on a twelve-string.
Another tip, particularly if you don’t want to get involved in open tunings, is to use a capo to track a second part using different chord shapes to the first part. Take the progression from the previous paragraph. How about putting a capo on the third fret and playing A / bminor / f#minor / E? Yeah, that’s right: it’s the same sequence as the guitar is sounding a minor third higher than concert pitch because of the capo. Once again, this can be used to create a tone, a richness of sound, that simply can’t be drawn out of one instrument. Again, if one of these parts is played on a twelve-string, the effect is amplified still further.
All of these ideas are time-honoured, copper-bottomed arrangement techniques that have been around for decades. I’d like to be able to tell you who did it first in order to give them their due credit, but I simply don’t know who we have to thank. So give them a go yourself, practice until you can double acoustic parts tightly (there’s no shortcut: you have to earn it through hard work, I’m afraid), and then go crazy in a 1971 George Harrison, All Things Must Pass stylee.
George, contemplating another guitar overdub