Hey I was just wondering on something as far as soloing. I have written part of a song, so far have the riff and an intro solo, both of which are based in the A minor scale. I was wondering could I make a main solo in a different scale like E minor for example, or would that be wrong. Also does anyone have any ideas on coming up with little licks for between chords in a riff to make it sound cooler and more technical, if you have links to sites or videos that would be great, thank you!!!