Expanding on the A Minor pentatonic scale. (this isn't tab it's a scale. across the board like in doogs example of the pentatonic)
G A C D
--3-----5---|-5--8--|---8--10--|--10--12-----
--3-----5---|-5--8--|---8--10--|--10--13-----
--2-----5---|-5--7--|---7---9--|---9---12-----
--2-----5---|-5--7--|---7--10--|--10--12----
--3-----5---|-5--7--|---7--10--|--10--12-----
--3-----5---|-5--8--|---8--10--|--10--12------ and it continues over lapping
each other as you can see from the example. so basically what thins means is that you can play pretty much any of these notes in any order over a guitar part or bass part thats in the key of A.
the A one above is the one in doogs example, and it serves as the root note for the scale. by moving this scale to say G for example and shifting all the other patterns up to coraspond with that movment you get the G minor Pentatonic etc.
This is used heavily in rock music and should be practiced extensivly. in fact it wouldn't hurt to know the names of all the notes that are in it, so you know what you're doing, and where the octaves are etc.
this is my fav. scale it sounds very creepy and cool. play this as tab and moderate tempo
e----------------------------------------
b---------------------------------------
g-------------------------------------------
d---------------6-7--7-6--------------------
a--------5-7-8-----------8-7-5-------------
E-5-7-8--------------------------8-7-5-4-5-
