[11] In the words of composer Nicole Robson: "The halldorophone utilises a simple system, whereby the vibration of each string is detected by a pickup, amplified and routed to a speaker embedded in the back of the instrument.

By adding gain to individual strings in the feedback loop, the instrument's response can become rapidly complex, potentially spinning out of control.

While every musical performance of a piece is unique in some way and contingent on its particular moment and situation in time, the unstable nature of the halldorophone exacerbates this condition.

[14] Hafdís Bjarnadóttir's piece "A Day in February", for halldorophone and accordion, was nominated by the Icelandic National Broadcasting Service for the International Rostrum of Composers in Vienna in 2011.

[17] The Icelandic composer Guðmundur Steinn Gunnarsson wrote a suite for solo halldorophone, Hafið og Örninn, which premiered at the 2015 Hljóðön concert series by the Finnish cellist Markus Hohti.

[22] Schoenberg would later use the same instrument from Occidental College in May 2022, at a Latin American-themed festival by the Louisville Orchestra in Kentucky, where he premiered his piece "Automation".

[25] In 2018, Icelandic composer Hildur Guðnadóttir scored the film Sicario: Day of the Soldado using a halldorophone, which she claimed was her main instrument at the time.

[29] Secondson released the score Tónlist frá: hér að neðan, which features the halldorophone and Yamaha CS60 extensively, on 1 October 2019.

Greek melodic death-black metal band Temor recorded their album My Sorrow's Rage which features the halldorophone played by Konstantinos Chinis.