Drone synth can Create a Auto Drone that has a very warm sound
Features synth features such as Filter with resonance,
LFO with modulation of pitch and filter cutoff and rate control.
Attack Decay Sustain Release controls.
Reverb and Delay
Octave shift as well as option to play as drone or not.
One full octave worth of keys but option to go up or down in octaves.
example of track made using synth