This guitar lick expands on a lesson Paul Gilbert wrote in the latest Premier Guitar see a few posts back for the link. In this guitar exercise I am using just four notes notes D and C and A and G in two different locations on the neck. The first set is the D at the third string 7th fret and the C on the 5th fret the A and G are on the same frets just on the fourth string. The second position for these notes is the 7th fret G string and 10th fret 4th string for the D and C and again up to the 4th and 5th string for the A and G notes. Now in this exercise you are going to play D,C,A,G first in eight notes with a downstroke and then the same combinations for 16th notes. Then you switch to the next position and do the same just begin with an upstroke. Start slowly with a metronome and see if you can alternate two beats with eighth notes and 2 beats with 16th notes.
A great lick that starts off with the first sequence is a solo section from the live version of "Suicide Solution" by Ozzy and Randy Rhoads. A more recent song that also uses a similar sequence is "Ravenous" by Arch Enemy.
Ok here are the notes in the two positions shown in guitar tab: