The Moog Grandmother is an analog semi-modular keyboard synthesizer with circuitry inspired by the Moog Modular. It has an arpeggiator and sequencer, two VCOs, an LFO that can be used as a third oscillator, a low-pass ladder filter as well as a simple high-pass filter and a spring reverb. The Grandmother can be played as a regular synth voice without patching anything, but you can experiment with other routing options by using patch cables.