Darowyn wrote: "Like I mentioned earlier, this was a resonator guitar, but instead of using a loudspeaker style cone like the dobro, the idea was to increase volume by fitting a further set of strings inside the body. The extension of the tailpiece that looks like another tuning head, is another tuning head to tune the internal strings".

Depending on how close the strings were to the head itself, wouldn't this be similar to a snare drum?