Time Functioning Patterns by Gary Chaffee. For Drumset. Method/Instruction; Percussion - Drum Set Method or Collection. Patterns. Book & CD. 52 pages. Published by Alfred Music Publishing (AP.EL03586CD).ISBN 0769234771.Patterns is one of the most comprehensive drum methods available. Covering a wide range of materials, the books can be used in any order, or in any combination with one another. They are a must for developing the kinds of skills necessary for drum set performance. Time-Functioning Patterns includes materials dealing with rock cymbal ostinatos, jazz independence, and the new linear phrasing concept that Gary developed.