"Most rock guitarists find it easier to solo using the minor scale" but what if the song is in C major chord~doesn't it sounds bad when you play a "minor" scale? (except Am scale.cuz Am=C).

Rock music generally straddles the major/minor distinction. Lots of major scale rock songs will have a minor 3rd, and even more rock songs have a flat 7th note. So, a rock song in C major is likely to have an Eb and a Bb, both minor key tones.

Because of this, you ought to try both the C major and C minor pentatonic scales.



C minor pentatonic
E |-----8---------11---|----------------------------------|
B |-----8---------11---|----------------------------------|
G |-----8------10------|----------------------------------|
D |-----8------10------|----------------------------------|
A |-----8------10------|----------------------------------|
E |-----8--------11----|----------------------------------|

C major pentatonic
E |-----5-------8------|----------------------------------|
B |-----5-------8------|----------------------------------|
G |-----5-----7--------|----------------------------------|
D |-----5-----7--------|----------------------------------|
A |-----5-----7--------|----------------------------------|
E |-----5-------8------|----------------------------------|


I have been webmastering so much this year, that my guitar playing is rusty. So, feel free to correct me, Willridge and anybody else, if I am not 100% accurate here.