Of the three instruments built, only the last one, made by Theremin in 1978 for Lydia Kavina, survives today. The instrument was named after the Greek muse of dance, Terpsichore (from the Greek words τέρπω, "delight", and χoρός, "dance").
Of the three musical instruments constructed by Theremin in 1978 for Lydia Kavina, only the final one still exists. The instrument was named after the Greek muse of dance, Terpsichore, combining τέρπω (delight) and χoρός (dance).