Gwen Stefani  certainly showed the depth of her generosity by pledging $1 million to Save the Children's Japan Earthquake-Tsunami Children in Emergency Fund earlier this week -- "The disaster in Japan is beyond heartbreaking and I want to do anything I can to help," she said -- but she joins a stellar group of people from the music community who are mobilizing to provide help and aid to Japan. Dozens of musicians across all genres have taken up the cause through donations, auctions and events. A partial, by-no-means-complete listing follows:
On Friday, Sony and iTunes announced "Songs for Japan," a 38-track album featuring artists from all major labels, which is available now at iTunes and will be released as a 2-CD set on April 4. All of the monies earned from the album -- which features songs by John Lennon, U2, Bob Dylan, Lady Gaga, Justin Bieber and others -- will be directed to the Japanese Red Cross Society (JRCS) to support its disaster relief efforts. The society will use the funds for the ongoing provision of immediate relief and for eventual recovery support to the affected population. The artists participating on "Songs for Japan," the music labels and music publishers have waived their royalties and proceeds from the worldwide sales of the album. In addition, iTunes will donate all proceeds from the album's worldwide sales to the benefit of the JRCS, and prominently feature the project throughout its stores worldwide.
Ne-Yo  performed in Nagoya, Japan just three days after the earthquake and tsunami. He created special wristbands and collected charitable donations. Snoop Dogg  designed a T-shirt printed with the phrase, "Keep Ya Head Up," in both English and Japanese. "I got so much love for Japan," Snoop Dogg said in a statement. "I hope that this tee…will make a difference."
On March 27, Sonic Youth  will headline the Concert to Benefit Japan Earthquake Relief at Columbia University in New York. They'll be sharing the stage with Yoko Ono , Sean Lennon  and others.
Today British music festival All Tomorrow's Parties announced a London benefit concert for the Japanese Red Cross. The line-up will feature Squarepusher , LFO , Fuck Buttons  and several guest DJs.
Blink-182 's Mark Hoppus was one of the first to respond to the disaster, quickly turning to eBay to auction off Blink-182 memorabilia. "So sad for what's happening in Japan," Hoppus tweeted. "Gonna dig in the bins & find some old blink-182 items to auction for the Red Cross."
Indie acts Fleet Foxes  and The Mountain Goats  have also taken to eBay, auctioning off rare and unreleased songs to benefit Doctors Without Borders and Global Giving Japan Earthquake and Tsunami Relief Fund.
Simon Cowell intends to put together a relief song for Japan. Soon after the disaster, he tweeted, "Ok, For What Has Happened In #Japan I Will Be Getting Loads Of Singers To Do A Song For It, @justinbieber @britneyspears  @katyperry  And More. The following day, Cowell tweeted that more artists had been added to the project, including Jessie J and British boy band One Direction.
Linkin Park  frontman Mike Shinoda designed T-shirts, now for sale at LinkinPark.com. The sales will benefit Music for Relief and Save the Children. Shinoda, whose father is Japanese-American, has begun to release new Linkin Park songs to benefit Music for Relief. "Does anyone want a new Linkin Park instrumental song, to benefit MFR Japan relief," he tweeted on March 15.
DJ and producer Alex from Tokyo  will be hosting an "NYC Loves Japan" party at New York club Cielo on April 3 to benefit the Red Cross of Japan. The event will feature ten DJs and will be streamed live to Japan.
Jack Johnson  announced that he will donate $50,000 to GlobalGiving's Japan Earthquake and Tsunami Relief Fund. Johnson was on tour in Japan when the earthquake hit. "Our thoughts and prayers are with all of the families that have been affected by the earthquake and tsunami," he said in a statement. "We are making a donation to help with the relief efforts and hope to be back in Japan soon to reunite with friends and play more music." Although the rest of Johnson's tour dates in Japan were cancelled, Johnson will be donating 100% of the profits from the remainder of the tour to aid Japan.