Led Zeppelin Hosting Livestream for 15th Anniversary of ‘Celebration Day’

Led Zeppelin is honoring the 15th anniversary of Celebration Day with a global livestream event.

Tomorrow (December 10), the Zeppelin YouTube channel will be streaming the concert film beginning at 3 PM EST/12 PM PST/8 PM GMT. The concert was recorded at London's O2 Arena on December 10, 2007. It was part of a tribute to Atlantic Records founder Ahmet Ertegun.

The show marked the first time in 27 years since Led Zeppelin performed a headlining set together. Surviving members Robert Plant, Jimmy Page and John Paul Jones were joined by drummer Jason Bonham, son of the late John Bonham. The concert featured a 16-song setlist spanning the band's iconic catalog.

A YouTube window for the livestream is below.

Led Zeppelin and their catalog as a whole have become more beloved and revered with time as they've been passed down through generations and become standards for which future bands are measured.

So, how do you honor one of the greatest, most influential bands of all time? Hunker down with a fifth of Jack Daniel's, a 2-liter of Coke and dive headfirst into the "Zep-a-Thon." Dubbed so by Jack Black when the band received the Kennedy Center Honors in 2012, the "Zep-a-Thon" is a musical binge session where you listen to all of Zeppelin's eight studio albums (plus the 1982 compilation album Coda) in one sitting.

"Led Zeppelin: The greatest rock and roll band of all time," said Black. "Better than The Beatles, better than the Stones, even better than Tenacious D."

Black continued, "If you don't agree with me, it's because you never did the 'Zeppelin Marathon.' The 'Zep-a-Thon' is when you sit your ass down and listen to all nine Zep albums in a row ... [It's] the thing every true fan must do at least once in their lifetime. The pilgrimage to heavy metal Mecca."

For the author, this binge wasn't all for pleasure, even though it was oddly fulfilling. The purpose of doing this was for research in order to rank all 92 original Zeppelin tracks.

Exhausting? Yes. A bit much? Maybe, but crazier things have likely been committed in the name of Zeppelin throughout the past five decades. We're positive a simple Google search will yield many things that prove this statement correct. However, we're almost too afraid even to find out what those things are.

Where do your favorite Zeppelin tracks rank? Scroll through the gallery below to find out!

Additional song descriptions by Brian Ives.