Bart Hopkins Shaker Arms Instrument at Spirit of Invention 3 at Bridge ArtSpace - Summer 2019

Soundiron Podcast | Interview with Bart Hopkin

Brancor — a musical instrument by Bart Hopkin

BART HOPKIN - "Exploring the Science of Sound with Invented Musical Instruments"

Weighted String Instruments

Exploring The U with Bart Hopkin

Wobble Steel Guitar— Bart Hopkin