If your building a solo and you want to sound like your playing with the song and not just shreding aimlessly be sure to use chord tones especially on stressed beats. When you think key center (picking a scale and going for it) unless you have a good ear you can sound lost, bland and you can still hit plenty of wrong notes on changes. Use licks, rip peoples soloing ideas off, move with the chords, and dont ignor rhythmic soloing aspects or get stuck in strictly diatonic scale shapes. [U]Every note of your solo is going to blend and contrast with the chords your playing over.[/U]