For this riff, you may want to use your thumb for the "low E" string
notes, as it will provide much more ease in playing the riff. The option
is still totally up to you though. In this riff you will be focusing
on some palm mutes and a slide, as well as some "vibrato." Vibrato
is when you rapidly shake the string being played with your fret hand
as much as possible to produce a wah-like effect. This riff is set
to 144 bpm (beats per minute).
Below is the riff slowed down a little to give you some practice:
