A Song for Mother's Day, Played on a Theremin. Here's Thomas Grillo playing a classic 1914 Mother song (written by Howard Johnson and Theodore Morse) on a Moog Theremin [wiki]. Happy Mother's Day, everyone!Hit play or go to Link [YouTube] - Thanks Ralph Geiger! Comments (0) Login to comment. Click here to view up to the first 100 of this post's 0 comments