South Africa's Channel 24 (opens in new tab) has brought to the world's attention a 57kg, (around 126 pounds for those not on the metric system) fully playable acoustic guitar. You can learn more about the guitar here (opens in new tab).
The creation of Cape Town resident Martin Stuckert, the guitar requires at least two people to be played, or even be carried from place to place. Tuning the guitar requires a wrench, so if you ever find yourself wanting to complain about your recalcitrant tuning pegs again, just keep this thing in mind.
Rather than playing it as a typical guitar, Stuckert samples and manipulates the sounds from the instrument, which inevitably are much deeper than those of a usual six-string.
We just hope he doesn't try to pass the guitar as carry-on luggage...