Watch the J.B. Number Two online guitar lesson by Andrew Ford from 50 R&B Bass Grooves You MUST Know
This one is based on a riff from James Brown's classic “Sex Machine” with its staccato and syncopated rhythms. One of the keys to playing this groove correctly is muting the 8th notes in the first half of each bar so you get a nice contrast with the 16th note figures that come in the 2nd half of each bar. In bar 2 we have a slightly raked phrase on beat 2 that ends on F# and then walks up chromatically to the 5, A.