Lev is a machine for playing a theremin.

Lev is named after Lev Termen (Leon Theremin), a Russian scientist who invented one of the first electronic musical instruments, an instrument which is played without touching, and which bears his name.

Lev is made out of an old floor lamp, some plumbing supplies, a few empty mint tins, and some microprocessors. Lev will never replace the human theremin virtuoso, although, as there are so few of the latter, a mechanical substitute may someday be vital to our economy.