What once was a kind of fun look-alike situation has turned into so much more. Many fans noticed the striking similarities between Red Hot Chili Peppers drummer Chad Smith and actor-comedian Will Ferrell and the two celebs have parlayed that into a memorable appearance together on The Tonight Show Starring Jimmy Fallon and several charitable concert events. The latest such event took place Friday (April 29) in Los Angeles at the Shrine Auditorium.

Dubbed "Will Ferrell & Chad Smith's Red Hot Benefit Comedy + Music Show & Cinceanera," the event promised the two billed performers plus a number of special guests, but to the surprise of many in attendance, there proved to be a who's who of drumming legends.

On the comedy side of things, Ferrell danced in a unitard with a group of female modern dancers to Adele's "Hello" and welcomed Jim Gaffigan, Nick Offerman and Roy Wood Jr. On the music side, Smith's Red Hot Chili Peppers were joined by Devo and a drum battle for the ages.

Ferrell and Smith stated during the show that their drum battle had been done so they welcomed "drum surrogates" to step in for them. Chad Smith introduced Taylor Hawkins, while Ferrell brought out an unidentified "14-year-old kid from Brentwood, California." Tommy Lee stepped up next, countered by actor-comedian and Late Night With Seth Meyers band leader Fred Armisen. Finishing out the battle, Smith welcomed The Police's Stewart Copeland who matched up against Ferrell's Fleetwood Mac drum god Mick Fleetwood. And with the event being held at the Shrine, located right by USC's campus, Fleetwood was joined by the USC Marching Band reprising Fleetwood Mac's "Tusk."

After the drum off and comedians, Devo rocked through a brief set that included "Whip It" and "(I Can't Get No) Satisfaction," before giving way to the Chili Peppers. Tracks like "Can't Stop," "Snow (Hey Oh)," "Otherside," "Californication" and "By the Way" got big responses, but giving fans a lasting memory, Ferrell addressed the crowd as a wealth of drumkits where wheeled out onstage and the Chili Peppers set ended with their encore cover of Stevie Wonder's "Higher Ground" featuring not only Smith, but also Taylor Hawkins, Tommy Lee, Fred Armisen, Stewart Copeland, Mick Fleetwood and Devo's Josh Freese each playing their own kits as well. Fan shot footage can be seen above.

In addition to the show, fans were also treated to a video that included humorous Red Hot Chili Peppers and Will Ferrell facts from Funny or Die, as well as footage from past Smith-Ferrell collaborations. Check it out below.

Proceeds from the show were divvied up between Ferrell's Cancer for College and Smith's choice, the Silverlake Conservatory of Music, which is a nonprofit organization for music education headed up by Flea.

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