Mojo, a music brand and concert organizer, was founded in 2021 by Charley Blacker, Alex Parker, and Emily Donovan while they were students at the University of Massachusetts Amherst. The trio of friends decided to create Mojo out of their shared love for music and house shows.

“We saw there were so many local musicians that were so talented, but they didn’t have the platform we thought they really deserved,” Blacker told the Globe during Saturday’s festivities. “So we thought if we could do the behind-the-scenes work of organizing photographers and [provide] a social media platform, we could give these musicians the platform they deserve.”

Five years later, the team behind Mojo is sticking to their mission, tackling their biggest venue yet with this weekend’s event at City Hall Plaza, which previously served as the original location for Boston Calling before it moved to the Harvard Athletic Complex in Allston. Boston Calling announced last year that it is taking a one-year hiatus in 2026, with plans to return in 2027.

In addition to getting the chance to work on such a big event with his best friends, Blacker hopes Mojo Boston can help “lead to a lot more opportunities for local music.”

There was a wide range of genres represented at Saturday’s event, from the pop-rock stylings of The Bends to house and garage music from DJ AC Slater. Prior to the Boston debut, Mojo brought a festival to Pennsylvania’s Happy Valley in April and returned to Amherst later that month to host another event.

Mojo Boston attendees and former UMass Amherst students Emily Bowler and Max Debeau have been familiar with Mojo since its inception, watching the organization go from hosting basement shows to full scale music festivals. Debeau noted how many of the acts at Saturday’s event have worked with Mojo in the past, performing at UMass and other shows around the Bay State.

“To see it all come together has been great,” Debeau said. “This is the stage that they all deserve.”

“It’s crazy how quickly they were able to erect something so amazing,” Bowler added.

Formed in New Bedford, the band Autumn Drive was one of 18 acts that performed at Mojo Boston, and they are no strangers to a Mojo show.

“We’ve done, I think, every single Mojo that there is, so we’re very tight with them,” said guitarist and singer Charlie Gamache. “When we found out they were doing a big festival [in Boston], I was like, ‘We want in no matter what.’”

The band emphasized how much their relationship with Mojo has meant to them over the years, with Autumn Drive drummer Joe Gauvin praising the organization for “always putting us in front of a crowd that’s there to see music and hear us.”

From a makeshift stage out of wooden pallets in his basement to Boston’s City Hall Plaza, Blacker is is proud of Mojo’s success and is already looking ahead at what’s to come.

“This is really just the start of it all,” said Blacker. “We have very lofty ambitions and goals, and we have nothing but confidence in our ability to accomplish everything we set out to do.”

Gitana Savage can be reached at gitana.savage@globe.com. Follow her on X @gitana_savage.