It’s always fun to see celebrity worlds collide. Take Chance The Rapper and Alec Baldwin, who were apparently hanging out over the weekend and decided to record a video of Chance beatboxing while Baldwin raps over him. Chance posted the team-up on Instagram yesterday, and the viral get together is meant to raise awareness for the Young Chicago Authors non-profit. As Pitchfork points out, Baldwin takes his lyrics from Carl Sandburg’s poem “Chicago.” Here’s the video:

This is me beatboxing while Alec Baldwin raps, he is for the people. Him, Alfred Woodard and Ali from Tribe came thru the city to help raise money for YCA, the organization that built and developed myself and @Malcolmlondon into the leaders we have become. Give it up for them. Beautiful leaders we can all learn from #Chicago #LongLiveTheYoung #YCA

A video posted by Chance The Rapper (@chancetherapper) on Mar 1, 2015 at 6:13pm PST

Me and @chancetherapper were ON FIRE TONIGHT. Like…a serious….you know…burnin'…FIRE!! #LOUDERTHANABOMB

— AlecBaldwin (@AlecBaldwin) March 2, 2015

Also over the weekend, after attending a basketball game between Rhode Island and La Salle, Bill Murray made his way over to Rick Ross’ studio to hang out with the rapper. And, thankfully, they took some photos (via FADER):

#BillMurray funny dude pic.twitter.com/e5mypFz2Wo

— Hood Billionaire (@rickyrozay) February 28, 2015

pic.twitter.com/UCq1W57R94

— Luke Murray (@L_Murr) March 1, 2015

Rick Ross & Bill Murray #wow #rare pic.twitter.com/qExHdGDm4C

— illroots 4 the kids (@illroots) February 27, 2015

[Photo by Christopher Polk/Getty Images.]