Gentle Electric. The Gentle Electric Model 101 Pitch and Envelope Follower. Finally, a reliable and versatile instrument-to-synthesizer interface for the professional musician. First page includes B & W photograph of unit, Availability, Accessories, Specifications, and Some Suggested Applications (diagrams). Second page contains price list and order form. Price: $749 (fully assembled). Final page front: an article, "Pro Session: Interfacing Winds to Synthesizers" by Carl Fravel, reprinted from Down Beat (ISSN 0012-7568): Volume 47, No. 5. Final page back: What is a Pitch and Envelope Follower?, What can I use it for?, What kind of sounds can I make?, Can the synthesizer track at an octave rather than in unison?, What kind of synthesizer do I need?, So how do I set it up?, Does the PEF wok with voice?, How about strings and guitars?, How about wind instruments?, I see that the PEF is also available in kit form. Is it easy to put together?, How do I order the PEF?.