This guitar lick demonstrates double picking applied to a chord progression in Dmin. The chords used are Dmin, F, C and Bb. The lick is demonstrated in the context of a larger lick. The lick is all alternate picked 16th notes. This lick can be challenging to get at faster tempo. The video example was frankly a bit sloppy on my part and you really should strive to practice this strictly with a metronome. Depending on your preferences a looser feel during the song might be cool but when working on your technique try to keep strict time.
