All 77 Celebrities Who Have Helped Justin Bieber Count Down to His Next Song

On July 29th, Justin Bieber stopped by Ryan Seacrest's radio show to announce that a) he has new music coming b) it's called "What Do You Mean?" and c) it'll drop on August 28th. What do you mean we have to wait an entire month, we asked ourselves while simultaneously repeating the name of the title over and over in our minds.

It's been centuries since his last album — technically a year or two, but that's basically eternity in the music industry — so this was Very Big News. Seacrest helped help kick off his 30-day countdown, which seemed very nice at the time, except we learned very soon after that JB had enlisted a whole bunch of celebrities to help him pass the time until the track finally hits our headphones.

Ruby Rose, Orange is the New Black star and JB's occasional doppelganger

James Corden, the Late Late Show host and hero who forced Justin Bieber to karaoke in a car

Mariah Carey, the pop diva who may or may not be hitting the studio with Justin

J Balvin, the reggaeton star who once attempted to teach Justin Colombian slang

Lil Dicky, a comedic rapper and YouTube sensation

Kylie Jenner, who needs no introduction

Shaq, the former NBA champ and occasional actor

Travi$ Scott, the up-and-coming rapper and Kanye West signee

Ashley Benson, the Pretty Little Liars actress

Ariana Grande, the fellow Scooter Braun superstar

The Fat Jew, the Instagram famous man who may have the world's tallest ponytail

Halsey, the indie-pop darling

Big Sean, rapper and resident bad-ass on Justin's hit "As Long As You Love Me"

Little Mix, the coolest British girl group

Ed Sheeran, the beloved British redhead (who also sings)

Madison Beer, the adorable singer discovered by Justin Bieber

Fifth Harmony, the coolest American girl group

Meghan Trainor, the blonde bombshell who's all about that bass

Luke Bryan, the country star who just released an album

CL, the K-Pop singer and rapper

Alanis Morissette, Justin's fellow Canadian who gets irony unlike anyone else

Christina Perri, the chart-topping singer-songwriter

Tony Hawk, the professional skateboarder

Austin Mahone, Justin's pal and fellow pop crooner with nice hair

Rudy Mancuso, the funny Viner

Hilary Duff, the former Disney star and comeback queen

Twenty One Pilots, the pop-punk band

F*ck Jerry, the social media comedian

Tori Kelly, the guitar-playing girl of the moment

Ryan Sheckler, the famous skateboarder and former reality star

Hailee Steinfeld, the Pitch Perfect actress and singer of one of this summer's best tracks

Usher, Justin's longtime mentor and "Somebody to Love" collaborator

Matt Lauer and Savannah Guthrie, the Today Show hosts

John Leguizamo, the actor who may or may not be starring in Justin's next music video

Jack & Jack, the Vine-famous rappers

Martin Garrix, the EDM artist (and writer of this month's Teen Vogue cover story)

Will Ferrell (kind of), some actor

Ashton Kutcher, his Punk'd partner in crime

Dan + Shay, the country music singers

Ellen Degeneres, the talk show host and longtime JB BFF

Doug the Pug, the most famous dog to wear Calvin Klein briefs

Xenia Deli, the Elite model

Gigi Hadid, the It model of the moment

Carly Rae Jepsen, pop star and "I Really Like You" costar

Chris Marten, Coldplay frontman

King Bach and Anwar Jibawi, Vine stars

G-Dragon, South Korean rapper

Elvis Duran, talk show host

Tyler Oakley, YouTube star

Ben Stiller, actor and Zoolander costar

Kendall Jenner, model and apparent beach babe

Little Big Town, country quartet

Larry King, TV host

Jason Derulo, R&B singer

Kate Hudson, exceptionally famous Almost Famous actress

Cody Simpson, longtime Bieber bro

Sébastien Cauet, French radio host

Mark Wahlberg, aka Marky Mark, aka one of the best guys Justin knows

Chris Paul, Clippers point guard and NBA All-Star

Michael Buble, singer, songwriter, and apparent fellow Canadian

Maejor, music producer

Florida Georgia Line, country duo

Jiff the Pomeranian, "Dark Horse" star and the world's fastest dog on two legs (seriously)

Jaden Smith, rapper and Batman fanboy

Steven Tyler, Aerosmith frontman

Todrick Hall, viral video genius and MTV star

Kevin Hart, comedian and former Justin Bieber roaster

Miley Cyrus, old pal and VMA co-conspirator

Rory Kramer, self-professed "professional life liver"

Marnie the Dog, an internet-famous 12-year-old Shih Tzu

Alec Baldwin, actor and pal Hailey's uncle

Skrillex, world-famous DJ and "Where Are Ü Now" collaborator

Jaxon Bieber, Justin's little brother

Florido Basallo, Justin's hairdresser

[#instagram: https://instagram.com/p/66H_IvgvsV/?taken-by=justinbieber

Related: Listen to Justin Bieber's Brand-New (and Best Ever) Song "What Do You Mean?"