Bob Moog, the pioneering wizard behind today's explosion in electronic music technology, will be in Orem on Tuesday to demonstrate the Kurzweil 250 Synthesizer. The 90-minute concert in the Orem High School auditorium, 175 S. Fourth East in Orem, will include a 30-minute talk by Moog. Moog's visit is sponsored by Syntrax Music of Orem, and is free.