Radio Sweden spoke to project producer David Gustafsson just a few hours before the broadcast began. He said the atmosphere in the glass cube where the broadcast will take place was getting more excited by the minute.
Money will be raised through listeners requesting songs, and also bidding in auctions on items donated by celebrities such as Usain Bolt, who has given a signed pair of shoes to the event. The cash will be spent on projects to improve access to clean water for children in the world's slum regions.
The three presenters, Gina Dirawi, Kodjo Akolor and Jason Diakité, will live in a glass cube in central Malmö for six days, but they won't get lonely, they will get visits from Swedish stars such as Loreen, Agnes, Amanda Jenssen, Markus Krunegård, Timo Räisänen, Panetoz and Eric Saade, all doing what they can to raise more cash for the campaign.
You can also play your part in Music Aid 2012, either by sending a text message to the number above (if you live in Sweden), or by clicking on one of the links below (For international users).