Last month, I demonstrated the seven modes/positions of the G major scale (G A B C D E F#), played three notes per string. I find that this approach is much more effective and versatile than staying within the standard fixed scale positions that most players learn and later use when soloing. The three-notes-per-string approach includes a one-fret position shift when crossing from the G string to the B and, as a result, offers a player greater phrasing and note-range options when crafting a single-note line.
If we broaden this approach to include an ascending or descending finger slide of one or two frets, an additional scale position will naturally fall under our fingers. This technique may be performed on any string, so the opportunity for position shifts is further increased, as are your melodic options.
FIGURE 1 presents a fast line performed primarily with hammer-ons, pull-offs and legato finger slides, wherein I pick the strings as little as possible. After an initial ascending double hammer-on, I move from the high E string over to the B and G strings using multiple pull-offs, and when I get to the G string, I repeat the ascending/descending phrase that initiates the line and continue down to the D string. On beat four, I move back up to the G string and then descend continually across all of the remaining lower strings, culminating with a pull-off to the open low E.
FIGURE 2 offers a similar and somewhat simplified line played in the same manner. Try to keep your fret-hand fingers directly above and parallel to the frets, striving for clear articulation of each note. Once you have this pattern memorized and feeling comfortable, try inventing a few variations on it by sliding to different positions at