Drum Online The Groove-Sign Book, The Groove-Sign Book, 335 Tricky Grooves for Drums & Cajon, byChristian Partsch, The Groove-Sign Book includes 335 grooves that can be immediately understood by the drummer/cajonist without having to read music, Grooves can be quickly understood,read and controlled with this simple method, The Groove-Signs are a supplement or also the start of normal notation, With them,even complex grooves can be written down within a few seconds, All 335 grooves are available for listening and playing examples as mp3 at: www.drum-online.org., English and german language, ISBN: 978-3-00-042030-6