Smith was the drummer for American
rock band
Panic! at the Disco, formed in 2004.
Fall Out Boy bassist
Pete Wentz discovered the band through the Internet and quickly signed them to his
Decaydance Records label before the band had even played a single show. Smith has played the percussion parts on the band's first four studio albums, ''
A Fever You Can't Sweat Out (2005), Pretty. Odd. (2008), Vices & Virtues (2011) and Too Weird to Live, Too Rare to Die! (2013). A Fever You Can't Sweat Out'' has sold over four million units worldwide, spurred on by the album's second single "
I Write Sins Not Tragedies" which became the band's second most successful song, reaching #7 on the US
Billboard Hot 100 chart and becoming the band's mainstream breakthrough so early in their career. The 2008 album
Pretty. Odd. debuted at #2 on the
Billboard 200, however it was less widely received in comparison to
Fever and quickly fell off the charts. In 2007, members of The Cab sent Smith a demo and he helped sign them to
Pete Wentz's
record label,
Decaydance. Smith appears in the music videos "
What a Catch, Donnie" and "
Headfirst Slide into Cooperstown on a Bad Bet" by
Fall Out Boy, and also appears in the
Gym Class Heroes video for the song "
Clothes Off!!" alongside bandmate Brendon Urie, and former Panic! at the Disco band members Ryan Ross and Jon Walker. The members are seen dancing in animal costumes, Smith being in a seal suit. In 2010, Smith and bandmate Brendon Urie appeared in
Butch Walker's music video "Pretty Melody", appearing as
ninjas. In 2009, founding member and
guitarist Ryan Ross and
bassist Jon Walker left the band, leaving Smith and vocalist
Brendon Urie as the sole remaining members. The short film addressed the departure of two former Panic! at the Disco members, founding member and guitarist Ryan Ross and bassist Jon Walker. Smith also stated that being on tour is his favorite part of the musical process, though that would be impossible without work in the
recording studio. On August 7, 2013, Brendon Urie announced via the band's website that Smith would no longer be taking part in the tour, stating that "He is away getting the help that he needs." On April 2, 2015, Smith announced his departure from Panic! at the Disco due to his addictions. in 2025. On October 18, 2025, Smith made a surprise appearance at
When We Were Young to perform "I Write Sins Not Tragedies" with Panic! at the Disco. The show commemorated the 20th anniversary of ''A Fever You Can't Sweat Out'', and marked Smith's first performance with the band in 12 years. ==References==