The Vimstrument is a piano you play with intervals, rather than by pressing notes directly. The instrument has a starting note, which can be played with the space bar. To move the note upward, press j to move one note up, k to move by two, etc. Likewise, press f to move one note downward, d for two, etc. Press Shift to move by larger intervals, and use the controls below to use different scales or to disable sustain.