Twenty-one stars, including Cheryl Cole, Robbie Williams, James Blunt and Susan Boyle, appear in the recording singing REM track Everybody Hurts.
After a brief message reminding viewers of the January 12 quake tragedy, the promo kicks off with former X-Factor winner Leona Lewis singing her heart out in black-and-white footage.
It goes on to show a rollcall of talent – including Rod Stewart, Mika and Westlife – interspersed with moving colour images of disaster victims in the Caribbean country.
While many artists sang their parts in West London's Sarm Studios – where the original Band Aid single was recorded – others, such as Jon Bon Jovi, Take That and Robbie Williams, laid down their vocals in LA.
In accompanying behind-the-scenes footage the performers talk about their involvement in the project.
“This is the part of being a celebrity that is the most important as it's when you get to use it for the best things possible,” said Cheryl.
For Oritsé Williams of boyband JLS, there was a particularly poignant reason to get involved, as he lost Haitian relatives in the tragedy.
"Recording the single was perhaps even more moving for me than others, who don't have a family connection. I found singing the track an incredibly emotional experience," he told The Sun newspaper.
Released on Sunday, the song quickly became the bestselling download and is expected to dominate the charts over the next few weeks.
All proceeds from sales of the track are being split between the Disasters Emergency Committee and The Sun’s Helping Haiti appeal.