This story has been updated since Monday night’s episode: After Monday night’s episode, Afro Blue cracks the top five with their rendition of “American Girl” by Tom Petty and The Heartbreakers. Afro Blue and the all girl group Delilah were in the bottom two, but the judges sent Delilah home granting the DC group another week safe from elimination.

Having made it to the seventh week of competition, Howard University’s Afro Blue is still going strong on NBC’s The Sing Off.

Last week, the seven remaining groups kicked off the show with a Halloween theme. Later, each group performed “superstar medleys” singing songs from some of the top artists in the music industry.

Professor Connaitre Miller founded Afro Blue in 2002 on Howard University's campus. (Macy L. Freeman/The Washington Post)

Christie Dashiell threw in some scatting, accompanied by Reginald Bowens and Brian Vickers.

Judge Shawn Stockman praised the group for their rendition of Janet Jackson’s music, he told them not to overcomplicate their songs. Judge Sara Bareilles was impressed with their stage presence.

“You guys have personality for days, and this was such a wonderful showcase of that,” Bareilles said. “You’re so much fun to watch, and you obviously really, really enjoy singing together. You’re really good at this.”

The show is now down to six groups, and Monday night another group will be sent home.

While the all-female group Delilah appears to be Afro Blue’s strongest competition, their loyal following at Howard University may be enough to keep the group pressing forward.

Check out Afro Blue’s performance from Week 6:

Check out what people had to say on Twitter:

@MelechT “There’s something really, really special about Afro-Blue.” Yeah, it’s called Howard University.

@lightskinjones I don’t like that afro-blue gets criticized for doing things other groups can’t do. Musically they’re the best! Don’t knock em for that.

@Chitti_BANG This is my first time watching The Sing Off and I have one word for Afro-Blue….“Beast!”

@Kikisings Afro blue is the only group killing while increasing the musical knowledge of the listeners..

@Valuethinker I am so grateful for the sophistication of a musical group like #Afro-Blue whose takes all genres & transcends age, culture and race.

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