In the six weeks since tsunamis ravaged the coastlines of Southeast Asia and East Africa, governments and global organizations have pledged almost $4 billion in aid. The music community has been equally up to the task, organizing charity singles, nationwide telethons and benefit concerts — and yet again, an A-list group of musicians is answering the call, this time for two benefit concerts in southern California.

Linkin Park, Jay-Z, Blink-182, No Doubt, Ozzy Osbourne and Jurassic 5 are among the artists confirmed for Music for Relief's Concert for South Asia, to be held at Arrowhead Pond in Anaheim, California, on February 18. All proceeds from the concert will benefit Music for Relief: Rebuilding Southeast Asia, the organization formed in part by Linkin Park (see "Linkin Park Establish Charity To Help Tsunami Victims") that has raised more than $1.5 million for victims of the tsunamis.

"When we started Music for Relief, we hoped to mobilize artists and fans to contribute to the massive relief effort in South Asia," Linkin Park guitarist Brad Delson said in a statement. "Due to the incredible support and generosity of so many of our peers and supporters within the music community, Music for Relief has played a vital role in helping get aid to people who most need it.

"We are deeply honored to participate in what will likely be our biggest event to date, Music for Relief: Rebuilding Southeast Asia," he continued. "With so many amazing artists on one bill, we expect this concert to be incredibly powerful in its ability to raise both money and awareness for the long-term rebuilding effort we must all support."

Tickets for the concert are set to go on sale Friday, with a special pre-sale promotion scheduled to air Wednesday on Los Angeles radio station KROQ-FM. Organizers hope the concert will raise more than $1 million for tsunami relief.

"A disaster of this magnitude that affects so many people forces you to ask yourself, 'What can I do to help?' " No Doubt bassist Tony Kanal said in a statement. "We were compelled by that question to come together for this show and do what we do best to make the most impact in both dollars and awareness. We are looking forward to giving the fans a great show, and in return, needed funds that will head to South Asia to rebuild the broken communities of our brothers and sisters on the other side of the globe."

On Friday, Will.I.Am of the Black Eyed Peas and his new label, Will.I.Am Music Group, will host a tsunami-benefit concert at the Avalon in Los Angeles. The show will feature performances and a jam session by the Peas, Justin Timberlake, James Brown, John Legend, Macy Gray, Carlos Santana, Herbie Hancock, Earth, Wind & Fire and others. The event will also consist of an online auction, via eBay, where fans can bid on VIP tickets to the event as well as celebrity-donated items. All the proceeds from the event will go to the U.S. Fund for UNICEF to support tsunami-relief efforts.

For MTV's firsthand coverage of the aftermath of the tsunamis, see "MTV News Presents: After The Tsunami." To find out more about how you can help, see "Tsunami Relief: What You Can Do To Help."