This is the lead from the Blade Runner opening track. It's played by Vangelis in E major with : E - F# - C# - B / E - F# - A - G# - F# - G# / B - C# - A# - F# - A - E. It sounds better with a chorus/reverb and no feedback ;)
Turn the Pitch Int knob slowly back and forth between 12:00 and 100% to make a spaceship “hover” sound.
If you set the octave to 2’ and don’t move the Pitch Int knob it becomes a phone sound effect