Watch the 5-4-1 Salsa Groove online guitar lesson by Andrew Ford from Bass Groove Survival Guide
In this kind of groove the bass sound often emulates that of the ampeg baby bass, it is like an upright bass but more percussive. You will be using mostly the root and fifth of each chord. Listen very closely to the percussion instruments as well as the piano in locking in the groove. I often use the muted technique with my right thumb to emulate this particular sound.