[artist id="2481017"]Jennifer Hudson[/artist] will perform at the [article id="1600799"]51st Annual Grammy Awards[/article] on February 8, where she's been nominated for four awards.

This is the second televised performance Hudson has announced since the October murders of her mother, brother and nephew. Last week, it was revealed that the Oscar winner will [article id="1602677"]sing the national anthem at the Super Bowl[/article], in Tampa, Florida, on February 1. That will be the singer's first public appearance since the tragedy.

Another "American Idol" alum, three-time Grammy winner [artist id="1933910"]Carrie Underwood[/artist], was also announced as a performer at the awards show. Hudson and Underwood, who is up for Best Female Country Vocal Performance this year, join previously announced performers the [article id="1602662"]Jonas Brothers, Coldplay, Lil Wayne, Kenny Chesney and Katy Perry[/article]. Perry is the featured artist for [article id="1602124"]"My Grammy Moment,"[/article] the contest in which fans of the singer will have their submitted performances televised while she sings "I Kissed a Girl" at the show.

Hudson is up for Best Female R&B Vocal Performance, Best R&B Song (for "Spotlight"), Best R&B Performance by a Duo or Group With Vocals for her duet with [artist id="1197713"]Fantasia[/artist] ("I'm His Only Woman"), and Best R&B Album. Days before the show, she will also perform on February 6 at the [article id="1601825"]Recording Academy's MusiCares Person of the Year gala[/article] honoring Neil Diamond.

The 27-year-old sang the national anthem at the Democratic National Convention in August to a rapturous reception, but she is not expected to take part in any of the festivities for President-elect Barack Obama's inauguration.