The rake is another useful technique which is used in Blues playing. It involves fretting a note and laying a finger (or fingers) across two or three adjacent strings. The pick is then raked across the strings, causing a muted sound leading up to the original note which is left ringing. A rake is indicated by an arrow in the tablature pointing up to the note to be raked. Listen to the following example on the recording to hear the effect of the rake.
Here is a lick which makes use of the rake.