Damon Albarn has questioned whether Band Aid 30 is a suitable way of tackling Ebola.
The 46-year-old musician is one of few public figures to hit out at the charity single - which features a wide array of stars - saying that it's unlikely to resolve the problem.
The Blur frontman reflected: "There are problems with our idea of charity, especially these things that suddenly balloon out of nothing and then create a media frenzy where some of that essential communication is lost.
"It starts to feel like it's a process where if you give money you solve the problem, and really sometimes giving money creates another problem."
The singer also hit out at the lack of African-born performers on the new track, telling Channel 4 news: "That's great, just a few more would be nice and also maybe go there - all those people who are making that."
Meanwhile, singer Adele is said to have ignored "100 phone calls" to appear on the charity single, which features the likes of One Direction and Coldplay's Chris Martin.
A Band Aid source told The Sun newspaper: "We made 100 phone calls to Adele because Bob and Midge were desperate for her to take part.
"But it was complete radio silence back. She didn't even bother to say she couldn't do it."