Drawing upon early recordings, documentary evidence, and the few surviving mechanical instruments, author Clive Brown investigates how we might rediscover the subliminal messages Classical and Romantic music notation was intended to convey to performers and argues that composers' intentions for their notation ought not to be confused with their expectations for its execution. The revised and expanded second edition incorporates new information resulting from the author's continued research and practical experimentation since 1999 and his work with a succession of talented doctoral students.