Welcome to our first-ever Greatest Guitarist poll, where 128 guitarists go head to head, round by round, in a bracketed format, all to crown your choice for the Greatest Guitarist of All Time.

We filled 124 of 128 slots with the names of a host of incredible guitarists (dead and living) — players chosen for their technical ability as well as their importance and creativity, not to mention how influential they've been. We asked you to vote in the final four names, which you did. Now the 128 slots are filled, and we're already well into Round 2.

You might come across one or two interesting style matchups in this poll, which may lead some of you to wonder, "How do you compare a shred guitarist to a blues guitarist?" Aside from how good a player is at his or her given style, here are some things to take into consideration:

• Influence: Who inspired more kids to beg their parents for a guitar for Christmas? Who inspired a wave of copycats?
• Chops/Versatility: Is the guitarist in question a one-trick pony or a master of many styles?
• Body of Work: Who had the more consistent career? Who has played on more classic albums?
• Creativity: Who pioneered new techniques? Who sounds the most radically different from what came before them?

You can check out full results via our regularly updated bracket here.

Round 2 — Today's Match

In what is as close to a grudge match as we've had so far, current Metallica guitarist Kirk Hammett takes on former Metallica guitarist and iconic Megadeth frontman Dave Mustaine. Which of these thrash legends will make it on to the third round? Vote now!

Monday's matchup saw Brian May (63.26%) defeat Jeff Beck (36.74%). View the full bracket.