Angry alumni of the beleaguered Columbia University Marching Band are beating the drum to get enough cash so the band can play on.

A GoFundMe campaign started last week had raised more than $18,000 toward their $25,000 goal by Saturday to keep the music — and antics — coming.

The Ivy League university’s administration silenced the band last month, over what was essentially a paperwork dispute, when the musical ensemble applied too late to become a recognized student group instead of operating as part of the athletic department.

The musicians sometimes ruffled the feathers of administrators with cheeky formations on the field and even cheering for the opposing team.

But it is beloved by alums and students.

“It made me very sad and very upset. The band was a really important part of my life when I was an undergrad,” said Samantha Rowan, who played saxophone and is president of the band’s alumni association. “I wish it hadn’t gotten to this point, and I’m holding out hope that we can come up with some kind of solution.”

Not only did Columbia alum, some who graduated decades ago, kick in cash, but so did graduates of other Ivy League universities.

Nathan Meyer donated $10, writing, “As a Harvard University Band alum (’02), I’m supporting the CUMB notwithstanding their inability to play and/or march.”

Cameron Danesh-Pajou, the band’s head manager, was heartened by the response of donors.

“It’s really nice for at least the band members and myself to see that there is this whole community trying to support us,” said Danesh-Pajou, a senior in the engineering school.