ft F T F F F S-;- F b llr p $ k $, k :.ili:'l XEIIHARMO An Infbrmal Journal NIKON XII of Experimental Music Contents: ltrot.es and Comments-;" _Firv yitlSon 'ALESSANDRO, LIKE A HURRICANE. .......1 John H, Chalmers, Jr. TRITRIADIC SCALES AND COMPLEXES, PART THREE ....39 T,arry A. Hanson DEVELOPMENT OF A 53-TONE KEYBOARD LAYO(JT . .58 Supplement: Instrument Makers etc., part one. ..85 cover design by Erv Wilson 1L Editorial Board: John H. Chalmers, Jr., Ervin J. Wolf {managino edj.tor}. Xell:r9"I_nsnlken is distributed throush Frog peak Ho"yrov.r, Nt{ oz't 5 j i M. Wilson, Daniel Music, P.O. Box 5A3b Xenharmonikon XII copyrioht @ 1989 DanieL J. Wolf