Originally Posted by: Jay Pham

I'm having some trouble playing the major scale fast.[/quote]

Playing fast single note lines requires extremely small motions. You have to develop relaxed & efficient picking hand technique and control with minimal motion.

Originally Posted by: Jay PhamI'm practicing a solo and there's a pattern that sounds like a major scale, but the player here play it so fast. Here's the link to the cover: https://www.youtube.com/watch?v=jAnLwJ9ysWM&t=0s (at 0:50).

That particular passage could be played legato (with hammer-ons) potentially making it easier to do. But in the video it is being played with alternate picking (picking every note).

[quote=Jay Pham]I tried to play it as fast as I can for the past week but still can not meet the requirement. [br]I wonder if I'm not practicing enough, or is there a way to increase my speed that I don't know about?

If you are not used to playing that fast it can take a long time to develop that skill. So, yes you have to practice a lot. But it also requires developing the right technique. This tutorial systematically covers learning to alternate pick for fast musical lines.

https://www.guitartricks.com/tutorial.php?input=287

The following ones in the series expand the idea. They include practicing scale patterns on adjacent strings with alternate picking as well as legato.

https://www.guitartricks.com/tutorial.php?input=928

https://www.guitartricks.com/tutorial.php?input=929

Hope that helps!