Citizen Four are here, and they're ready to "Testify."

The fast-rising quartet, made up of YouTube star/X Factor USA finalist Josh Levi, brothers Carson Boatman and Conner Boatman and X Factor USA finalist Austin Percario has already racked up nearly a million Spotify streams, and garnered over 10 million views on their highly popular YouTube covers of songs like "Black Beatles" and "Needed Me."

Following an opening slot on Sabrina Carpenter's EVOLution Tour, the group's Jonas Jeberg-produced new single, "Testify," is out today (Jan. 27).

To celebrate the release, each of the boys were kind enough to supply PopCrush with some suggestions for their very own curated Apple Music playlist.

"This playlist reflects our diverse backgrounds and inspirations. Music is a universal language and as a band we use our music to bring people together," the group says.

Check out each individual member's picks, and why they selected those songs — and give their playlist a listen below.

Austin

Kehlani, "You Should Be Here"
"I love this Kelahni record because I can relate to yearning for that special someone. She sings with such conviction & soul I can not wait for her new album to drop."

The Chainsmokers, "Paris"
"This song feels like an anthem for the reckless youth. It's a total vibe, simple & melodic...I love pop music."

Snakehips - "Don't Leave (feat. MØ)"
"This song is a smash in every way. I am in love with her voice, the production and the lyrics! 'I may not ever get my sh*t together but ain't nobody gonna love you better.' Hell yeah!"

Conner:

Bibi Bourelly, "Guitar"
"I like music that makes me feel a strong emotion and this song does a really great job with that."

Gemaine, "Freaky"
"I love this because the melodies and riffs are really special."

Julia Michaels, "Issues"
"It’s fun to hear another up and coming artist put out something super fresh. It has awesome melodies on a super simple, and track it works perfectly."

Carson:

Dierks Bentley, "Black"
"I love the big drums and emotion of the song both musically and melodically."

Luke Bryan, "Fast"
"It's so relatable to growing up and getting older. I've been noticing time start to really fly by."

Bibi Bourelly, "Ego"
"It's a song you play when you're trying to feel confident and bad."

Josh:

PARTYNEXTDOOR, "Break From Toronto (feat. Miguel)"
"This is a song I appreciate solely for the sonics. The production is extremely innovative and seems to combine an adventure of sound that I wish I came up with. I respect Miguel and PARTYNEXTDOOR beyond words."

Solange Knowles, "Don't Touch My Hair"
“'Don’t Touch My Hair' is extremely culturally significant and important. It represents the black upbringing of being seen as an exhibit or a pet because of our hair not conforming to the 'standard' idea of beauty or normality. This song genuinely explained what me and my sister experienced through elementary in a predominately white school."

Solange Knowles, "Cranes in the Sky"
"The combination of these songs from Solange are so culturally significant and each possess such innovative writing. I listen to these songs a minimum of once a day and would be honored to both artists as I greatly appreciate their art."

For more on Citizen Four, follow them on Twitter. "Testify" is available on iTunes now.