For celebrity watchers, the Grammys just got a whole lot more interesting.

Jennifer Lopez and husband No. 3 Marc Anthony will make their world debut performing together on the Feb. 13 Grammy show, being broadcast live from the Staples Centre in L.A. (8 p.m. Global/CBS).

Anthony, who is a double Grammy nominee for best Latin pop album (Amar Sin Mentiras) and best salsa/merengue album (Valio La Pena), reportedly married Lopez last June though neither talk about their nuptials.

Lopez has a new album, Rebirth, in stores on March 1.

In addition, Bono, Stevie Wonder, Norah Jones, Alicia Keys, Velvet Revolver, Tim McGraw, and Brian Wilson will take part in a special fundraising performance of Across The Universe on the Grammys.

Viewers will be able to go directly to the iTunes Music Store to gain access to a download of the live performance for 99c, and to CBS.com, which will offer exclusive video of the segment. All proceeds from downloads of the track will go to the tsunami relief efforts and even more performers are expected to be announced.

Just announced Grammy presenters include Hoobastank, Alison Krauss, model Tyra Banks and Steven Tyler.