At 8 p.m. Friday, Jan. 10,

will host improv jazz at Guthries on Middle St. in Lewiston. Demos has studied physics, jazz, and classical music performance privately and in college. He has been performing and recording with free jazz/free improv guitarist Jeff Platz in the Northeast U.S. and Europe and performing with the Portland-based band Mystic Out Bop Review, since the spring of 2000. He teaches high school chemistry and physics, and has been swallowed whole by a passion for analog music synthesis which he incorporates in his performances. There is no cover charge. For more information, call 207-376-3344.