I just want to know how do we compose different metal riffs for new songs? Is there any formula or something. How to compose guitar lead for new songs especially metal songs?
ANSWER
Hi, Dead--
Riffs and lead solos for any type of music are based on scales.
The best thing you can do for your riff and solo playing is to practice various scales in an organized fashion. Then you can combine the notes of the scales in different ways to make your riffs and leads.
Please visit Absolutely Free Guitar Lessons and check out every link that mentions scales. There is a wealth of free information there which should be of great help to you.