Book excerpt: Beginning concepts include reading music, the basics of the instrument, and building bass lines using scales, modes, and chord progressions. Intermediate topics include scales, techniques such as slap & pop, string muting, walking bass lines, modes, tetrachords, passing tones, and varying rhythms. The advanced ideas are designed to guide you into high-level bass playing with concept like ""Rhythm changes," tritone substitution, odd time signatures, chord playing, Latin groves, reggae, ska, and advanced funk bass lines.