Five months after the tragic murders
of three of her family members, Jennifer Hudson
is moving forward with planning her wedding
to David Otunga
-- and returning to the American Idol
After Idol's tribute to Motown Wednesday
, Hudson -- who finished in 7th place in season 3 -- pre-taped a performance for a future episode of the show. Host Ryan Seacrest
then chatted with Hudson and asked her if she had set a date for her wedding. "Yeah, but it's a secret," she replied. "I can't tell anybody."
Hudson, who will be touring with Robin Thicke
to promote her self-titled, debut album starting March 31, told Seacrest, "It feels great" to be back on the stage where she started her singing career.
Dressed in a black dress, a blazer, and leggings, Hudson, 25, who won a Grammy
for best R&B album earlier this year, gave a rousing vocal performance of her single "If This Isn't Love."
alum Ruben Studdard
also pre-taped a performance
that will air Thursday night. -- Lisa IngrassiaCheck out all our Idol coverage at PEOPLE.com/idol!