The Moodswinger is a twelve string electric zither with an additional third bridge designed by Yuri Landman. The rod which functions as the third bridge divides the strings into two sections to cause an overtone multiphonic sound. One of the copies of the instrument is part of the collection of the Musical Instrument Museum in Phoenix, AZ.

In March 2006 Landman was contacted by the noise band Liars to make an instrument for them. After 6 months he finished 2 copies of The Moodswinger, an electric 12 string 3rd bridge overtone koto, one for guitarist/drummer Aaron Hemphill and one for himself. Although it closely resembles an electric guitar, it is actually a zither, as it has neither frets nor a proper neck. The pickup and electronics are built into the neck instead of in the body like usual electric guitars. After Liars received their Moodswinger, they started recording their fourth album Liars. The song Leather Prowler is played with the Moodswinger, in many reviews confused with a piano. In 2008 the Moodswinger II was released as a serial product. Jessie Stein of The Luyas owns a copy.

Yuri Landman (born February 1, 1973) is a Dutch experimental luthier who has made several experimental electric string instruments for a list of artists including Lee Ranaldo of Sonic Youth,Liars,Jad Fair of Half Japanese and Liam Finn. He has also been active as a comic book creator, musician, and singer.

Yuri Landman started as a comic book artist and made his debut in the comics field in 1997 with 'Je Mag Alles Met Me Doen' (in Dutch). In the follow-up, released in 1998, 'Het Verdiende Loon', Landman described his negative experiences on a daily job. For the second title he received the 1998 Breda Prize, an award for rising new comic artists in Holland. Since then he has published no other comic books.

Together with Cees van Appeldoorn, he forms the lo-fi band Zoppo playing bass and prepared guitar in 1997. After 2 albums and several 7”singles, Landman left the band in 2000. Landman then formed the noise band Avec Aisance (aka Avec-A) with drummer/producer Valentijn Höllander and released a CD, Vivre dans l’aisance in 2004. After quiting Avec-A in 2006, he focuses mainly on instrument building.