Party Rock Band

Our namesake band--CROWD THEORY--is a 4-piece rock/pop party band with a big sound! Performing a range of hit songs including Top 40s, Alternative & Indie Rock, and the Essential Classics, the band puts on a high-octane performance with hip stage personas and a refreshing modern edge. CROWD THEORY features multiple singers, exciting rock interpretations of popular hits, and an unbeatable dance vibe. 


  • Top 40s

  • Alternative

  • Indie Rock

  • 80s

  • Classic Rock

  • Oldies

the lineup

  • Multiple Vocalists

  • Electric/Acoustic Guitar

  • Keyboards

  • Electric Bass

  • Drums/Percussion

optional features

  • 1-3 Horns

  • Additional Singers

  • Acoustic Set

  • Violin


  • Billy Idol (Petco Park)

  • Playboy Enterprises

  • HOP Media

  • UC San Diego

  • Hundreds of married couples, party planners, and corporations!

More Videos

Crowd Theory travels to Las Vegas annually to perform at the famous House of Blues!

Crowd Theory performed as the opening act for Billy Idol at Petco Park, the home baseball stadium for the San Diego Padres. Also featured in the band that day were Heath Francis of "The Straytones" and our saxophonist Glen Turner.

Crowd Theory at Ben & Ashli’s wedding in San Diego.

Crowd Theory performed a surprise acoustic set for Ardi's proposal to Jillian. Crowd Theory is available for a variety of musical services!

For the holidays, Crowd Theory can perform a wide range up upbeat Christmas songs as well as mellow Christmas jazz standards, some of which are arranged by the band!


Katie O. (Corporate Function)
[Crowd Theory] was such a pleasure to work with. They made everything so easy before the event. Then of course--the music itself was fantastic! It was a private work event and people were trying to pay money to come inside to participate because of how good the music was. I wouldn't hesitate again to have them at another event. Thanks you guys!
Deena (Wedding)
"I had the absolute best time at my wedding and Sean and [Crowd Theory] had a large part in making it the most memorable and best dance party of my entire life. I actually danced for two hours straight instead of talking to my guests and have zero regrets about it. They played such fun sets and had our guests on the dance floor the entire night. Even the catering gals were dancing in the kitchen to the songs! The level of talent and professionalism I got from Crowd Theory exceeded all of my high expectations and I want to get married at least every year just so I can have them back. On a logistical note, Sean was fantastic at communicating with me through the entire planning process. Crowd Theory definitely made my wedding and I could not be happier with them from start to finish."
Chris F. (U.S. Air Force)
Extremely professional, easy to work with, friendly, and incredibly talented, Crowd/Theory is surely a band on the rise. Every email was answered very quickly, the band was very flexible (accepted the gig with 5 days' notice) and accommodating, and most importantly, their music was AWESOME! 



Crowd Theory with Billy Idol! We were the opening act for Billy Idol in June 2017 at Petco Park, the baseball stadium that is home to the San Diego Padres!