4.4M views · 10K reactions | THIS unforgettable moment when the PS22 Chorus left Carrie Underwood speechless mid-performance while singing "So Small" together! (Carrie's peeps must have felt similarly -- they used an excerpt of this performance to close out her VH1 Behind The Music special!) #TBT | Gregg Breinberg (PS22 Chorus Director) | Facebook

280K views · 1K reactions | This inspiring group of women travelled from the West Coast and are singing their hearts out! The Lions Gate Chorus brought so much life to #CGT! Citytv | Canada's Got Talent | Facebook

3.6M views · 1.3K reactions | Andy Grammer and Gregg Breinberg (PS22 Chorus Director) honor the CNN Heroes by singing 'Don't Give Up On Me.' Get involved and right now your donations to the Heroes can go twice as far, learn more at CNNHeroes.com. | CNN Heroes | Facebook

479 reactions · 19 shares | Faithful Recreation Of The Most Celebrated All-Analog Chorus Effects Pedal. Tap the link to learn more! | Warm Audio | Facebook

20K views · 256 reactions | A tone beside itself, the EHX Small Clone is one of the THE classic analog chorus sounds capable of subtle doubling effects to full sickening swirl. Featured on countless records, this simple chorus pedal maintains a diehard fanbase nearly 50 years since it's release. Get lost in the mirror of tone. https://www.ehx.com/smallclone #ehx #guitarpedals #guitargear #guitareffects #electroharmonix | Electro-Harmonix | Facebook