Yes you could do that, but it would be “quicker” to learn what notes “not to hit” verses the ones to hit as there are less of them!
Like if you are majoring in “G” do not hit: G# (sharp) at any cost, the rest can be played to some extent but some only like to be played as “Grace Notes” or better stated as “transition notes” such as a quick slide off of to a more desirable note in the scale. Now the importance to learn scales is that some songs will have a “major sound”…Black Berry Blossum has a nice “major sound to it” and is based a lot from the major scale…it’s damn near walking down the major scale in the main riff of the song…you may hear it as being “cool” but if you heard it after you learned your major scale you would say “hell they are just walking down the major scale in 4 notes sequences that is easy enough”.
I read that thread where Ben talked about coming up with something on what notes to play out of G…however I will say that he more than likely will encourage you to learn the different scales as this is the minimum you can get by with in music. Now I am not saying that you have to learn all 5 positions of each scale that are typical, but man you gotta learn at least 2 positions for each scale ( G major, G pentatonic, G Blues Scale, and G minor pentatonic. Now the “penta” scales are in the major scale already…penta means “5” so there are only 5 notes in the scale…so if you learn the major all you have to do is take out 2 notes and you now have the pentatonic scale. The “blues” scale only adds in a couple diff notes to give it that “blue” sound…they actually call them “Blue Notes”…i.e “playing the blues”.
I guess what I am trying to say is that it sounds a lot more difficult then it really is, it’s the initial effort that one has to put forth to say “damn it I am gonna learn some of this”, then once they get their head wrapped around the theory then it’s pretty easy, but it takes that initial effort.
IF you can sing you can learn the major scale…start with the G note and find your “Doe-Rae-Me-Fa-So-La-Ti and Doe” that is the major scale.
If you listen to my lead I am really focusing on playing the melody (what you would hum or sing). Now I only get off that melody on a few notes. So it’s about setting down and working through it note by note…finding it on the guitar! Now your voice will leave spaces between notes, could be for 3 beats to finish the measure so instead of resting with your guitar like you are with your voice (No singing for the last few beats of the measure) simply fill it up with some cool notes to make the transition until the melody pops back up again.
When a chord change is coming up…land on the same note as the chord…so if you are going from G-C in the chord progression then right when the chord changes to C hit a C note in your lead…then when going back to G hit a G note at the same time the rhythm shifts to G…now build around this with other notes.
As mentioned I am no expert and am only starting out in my desire to become an efficient musician. I have never had any resources to ask about “theory” or scales, but I told myself “self you have got to learn this” so i mostly read stuff on the internet and watched Youtube lessons…is how I found this site. I still today kick myself in the butt for not starting on scales 20 years ago!