When a player runs a scale up and down, the listener can easily anticipate where the line is going. When you introduce an intervallistic leap—say, jumping up an augmented fourth, dropping a major seventh, and rising a perfect fifth—the line becomes angular, unpredictable, and highly modern. It mimics the wide-interval vocabulary of classical giants like Igor Stravinsky or Arnold Schoenberg, but recontextualized within a jazz rhythm. 2. Symmetrical and "Outside" Playing
Because these books were printed in limited quantities directly by Harris’s company (Hargrove Music), physical copies are incredibly rare and expensive collectors' items today. The digital PDF format has become the underground currency for modern jazz players seeking to study his exact exercises. eddie harris intervallistic concept pdf