What part are you failing at? I need more info if you want me to help. If its the section of Solo 7 where it goes: O,B,Y, O,Y, O,B,Y O,Y Then just play the O,Y parts like O,B,Y parts. It helps if you hammer-on them also.

If your having too much trouble with it or a part you should take it to practice mode and slow it down. Work on it till you get the groove and speed it up when you get comfortable with it. You can always check ScoreHero for advice to if need be.