Originally Posted by: spanky10940I've seen a few licks that just don't seem to follow the rules or their not a scale I know...

steve vai doesn't limit himself to the pentatonic scale :p. he'll pull out mid-eastern scales and all kinds of stuff you have to know theory to recognize (which i don't). From the little material i've come across in my short time playing, most licks are either pentatonic (blues/rock) or ionian major (sounding spanish).

should you worry about other scales? depends on what you want to play. if you want to dabble in some exotic stuff, i say go for it.