Re: The most overplayed song in the universe
Sounds like you're talking about the pitch bending up to a unison. If this is what you mean, then it's an old trick/technique that everyone did back in the 70's. :smokin:
Step 1 : Finger a note on your high E string. For the sake of illustration let's just say finger B on the E string with you index finger.
Step 2: While holding down B place your pinky on A on the adjacent string above (in this case we're talking about the A on the B string).
Step 3: Now with your pick strike both of the notes you're holding down simultaneously. The sound should clash since the two notes are only a major 2nd apart from one another.
Step 4: Now strike the two notes again, but this time bend the A on the B string slowly upward with your pinky until the A ascends to a B. At that point the pinky note will match the B held by the index finger creating a two note unison.
The technique is often performed on either of two pairs of adjacent strings. Namely the third and second string or the second and first string as previously described. However, when done on the third and second string, the index finger and the third finger are used rather than the index finger and the pinky.
Here is a clip of Santana doing it on the third and second strings. The techinque is clearly seen at 1:23.
http://www.youtube.com/watch?v=kvy4LzAbA0E&mode=related&search=
The technique almosts sounds like a whah at times. But this is actually caused by the frequencies of the two pitches clashing at different intervals until the unison is arrived upon.