Taylor Swift was recently strumming one during a show at EnergySolutions Arena. It is the Kavanjo, a banjo that uses electronic pickups to help the sound carry above the drums and guitar, reports The Salt Lake Tribune.
Kavanaugh devised a way to add electronic “pickups” â€” similar to the magnets in an electric guitar, which catch the vibrations of the strings and transmit them to the amplifier â€” to a banjo, punching holes in the instrumentâ€™s tensioned drumhead.
There have been other electric banjos, Kavanaugh said, but “nobody had gone through the plane of the banjo head before.”
There is a trade-off, Kavanaugh said, because piercing the banjoâ€™s drumhead reduces the acoustic resonance by about 5 percent. Itâ€™s unlikely the folks in the cheap seats at a stadium are going to notice.
The popularity of the “Kavanjo” has grown since 2009, Kavanaugh said, when Deering Banjos â€” a major seller of the instrument â€” put the electric add-on in its catalog. A “Kavanjo” drumhead goes for $299, while a banjo with the device factory-installed goes for $798.
Besides Swift, established stars like Keith Urban and John Mellencamp have a “Kavanjo” in their bands. And, Kavanaugh said, new independent rockers â€” such as Mumford & Sons and Avett Bros. â€” have incorporated the electric banjo into their sounds.