Eiche, Jon F. What's MIDI? : making musical instruments work together / Jon F. Eiche. - 1 ed. - Milwaukee, WI : Hal Leonard Pub. Corp., c1990. - 62 p. : ill. ; Includes index. ISBN: 0793500826 : LCCN: 90052873 Subjects--Topical Terms: MIDI (Standard) Dewey Class. No.: 786.7 / EI34 wha