Bruce Springsteen and Jennifer Hudson are among the many musicians who became the latest to sign on for the multi-network “Hope for Haititelethon Friday. Organizers say that they expect the celebrity list to top 100 names.

In addition, several new networks have joined the live Friday broadcast at 8 p.m. Eastern.

Springsteen and Hudson will appear in New York with Mary J. Blige, Shakira and the previously announced Sting and Wyclef Jean.

In Los Angeles, the performer list has expanded to include Dave Matthews, John Legend, Stevie Wonder, Taylor Swift, Keith Urban, Kid Rock and Sheryl Crow, along with Alicia Keys, Christina Aguilera and Justin Timberlake.

Bono, The Edge, Jay-Z and Rihanna will be on the telethon from a newly added London location.

MTV Networks, which is organizing “Hope for Haiti” with George Clooney, also said Tuesday that all musical performances from the telethon will be available for purchase for 99 cents at iTunes beginning Saturday, with all proceeds going to Haiti relief funds.

The Clinton Bush Haiti Fund and United Nations World Food Programme have been added to a list of organizations receiving funding that already included Oxfam America, Partners in Health, the Red Cross, UNICEF, and Yele Haiti Foundation.

Among the new group of networks that they will air the telethon are PBS, TNT, Showtime, Comedy Central, Bravo, E! Entertainment, National Geographic Channel, Oxygen, G4, CENTRIC, Current TV, Fuse, MLB Network, EPIX, Palladia, SoapNet, Style, Discovery Health, Planet Green. Plans had already been announced for the telethon to air on ABC, CBS, the CW, Fox, NBC, CNN, HBO, MTV, VH1 and CMT.

Though the telethon will be delayed on the West Coast on the broadcast networks, many of the cable networks will air it live at 5 p.m. It will also be streamed live on such websites as YouTube, Hulu, MySpace, Fancast, AOL, MSN.com, Yahoo and Bing.com — and through mobile networks including Alltel, AT&T, Sprint, Verizon and FloTV.

Hope for Haiti Now” will also air internationally on BET International, CNN International, National Geographic, and MTV Networks International, which is available in 640 million homes worldwide. It will be the first U.S.-based telethon airing on MTV in China.

Entertainment industry efforts to raise money for Haiti earthquake relief continued to grow. Monday night, a special edition of CNN’s “Larry King Live” raised nearly $10 million.