SOUL’D OUT of Wilsonville, OR: This award-winning mixed a cappella group from Wilsonville High School is comprised of students from all grade levels, musical backgrounds, and vocal types. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

SONOS of Los Angeles, CA: Formed in 2006 as a recording project that grew into a vocal band, the group blends their voices together in perfect harmony through years of experience. The live electronic effects they are also known for will not be part of the competition. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

MESSIAH’S MEN of Minneapolis, MN: Originally from Africa, these unofficial brothers survived the war in Liberia through the power of song and are on a mission to sing their hearts out while serving the Lord. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

THE DELTONES of Newark, DE: Founded in 1991, The University of Delaware Deltones pride themselves on their smooth tunes and their motto -- friends first, singers second. They focus their energy towards singing on campus and in the Delaware community, as it is important for them to give back to those who support them. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

FANNIN FAMILY of Hortonville, WI: The Fannin Family’s mother was almost a nun and their father was a rock musician. The outcome was 11 extremely well-behaved musicians and eight of them will be taking the stage to show the nation their Midwestern swag. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

THE COLLECTIVE of Nashville, TN: Formed by Street Corner Symphony’s Jeremy Lister (“The Sing-Off,” Season 2), this Nashville based first-time a cappella group is made up of individual singer-songwriters who came together to demonstrate that there is strength in numbers. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

PENTATONIX of Arlington, TX: The five-member group has a modern style and draws influences from several eclectic electro genres, including dub step and garage house. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

THE CAT’S PAJAMAS of Branson, MO: The Cat’s Pajamas, the all-male vocal band that formed in 2005, pride themselves on their ability to engage each audience member during their dynamic, energetic, and interactive performances, bringing a blend of classic songs with a modern a cappella twist. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

DARTMOUTH AIRES of Hanover, NH: Dartmouth College’s oldest a cappella group is currently made up of 14 fun-loving, high-energy guys with eclectic tastes and no shortage of quirky antics. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

URBAN METHOD of Denver, CO: The group, which includes a rapper, was formed by eight musicians whose individual sounds gravitate toward urban music. Each has extensive studio session work but has never previously performed together. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

NORTH SHORE of Boston, MA: For the last 30 years, this refined street corner group has entertained thousands of listeners throughout the Boston area with an experienced blend of harmony, rhythm, and tempo in songs from the 1940s to today. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

AFRO-BLUE of Washington, D.C.: This fun-loving ensemble from Howard University started as a class in the music department. They have plenty of soul, and all nine members meld together with beautiful harmonies, soaring solos, and a fresh look. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

THE YELLOWJACKETS of Rochester, NY: Formed in 1956, the University of Rochester YellowJackets are anything but old-fashioned and half the members are enrolled in The Eastman School of Music at the university. This fun loving group’s mark of distinction is their bright yellow blazers and distinctive sound. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

DELILAH of Los Angeles, CA: This all-female a cappella group, which includes members from the first two seasons of the series, has been singing across the country, but still carry an unfulfilled desire to conquer “The Sing-Off” stage. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

VOCAL POINT of Provo, UT: The all-male group is Brigham Young University’s premiere contemporary a cappella ensemble. Their nine-man vocal firepower continually invigorates audiences and entertains fans with inventive arrangements, humor, and remarkable vocal percussion. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

KINFOLK 9 of Los Angeles, CA: A nine-piece professional vocal group from Los Angeles in which everyone can sing lead, with all members coming from very strong musical backgrounds. Will this group win Season 3 of "The Sing-Off"?NBC/Mitchell Haaseth - Wednesday, August, 17, 2011, 5:17 PM

On the Rocks on the second season of "The Sing-Off." Students at the University of Oregon founded the all-male group in 1999. The group has had viral video success, with more than 6.5 million views of their popular rendition of Lady Gaga's "Bad Romance." On the Rocks is a group that strives to entertain audiences of all ages while maintaining a strong emphasis on musicality.NBC/Harper Smith - Saturday, December, 4, 2010, 12:4 AM

Committed on the second season of "The Sing-Off." This all-male group was founded in 2003 by four high school students at Forest Lake Academy. The group stayed together as it progressed to Oakwood University in Huntsville, Alabama, where the guys continued to perform together. Committed is dedicated to creating unique harmonies with powerful lead vocals, soaring harmonies, and a booming bass line. NBC/Harper Smith - Saturday, December, 4, 2010, 12:4 AM

Men of Note on the second season of "The Sing-Off." This all-male group of eight consists of alumni from Cherry Hill High School West, where the group was founded. Three-time winners of the Best of High School A Cappella competition, the group has the perfect mix of originality and diversity. NBC/Harper Smith - Saturday, December, 4, 2010, 12:4 AM

Groove for Thought on the second season of "The Sing-Off." Since Groove for Thought's inception in 1998, the group has been bringing its unique brand of jazz- and R&B-infused tunes to festival, concert, school, and nightclub audiences throughout the United States and abroad. The group won the National Harmony Sweepstakes Championship in 2005 and the Contemporary A Cappella Recording Award for Best Jazz Song in 2006.NBC/Harper Smith - Saturday, December, 4, 2010, 12:4 AM

The Whiffenpoofs of Yale on the second season of "The Sing-Off." Comprising 14 senior Yale men, the "Whiffs" were founded in 1909 and are the world's oldest collegiate a cappella group. What began as a quartet has grown into a group of international acclaim with a world tour that spans three months and features dozens of foreign destinations. Their repertoire incorporates modern hits as well as classics as old as the group itself. NBC/Harper Smith - Saturday, December, 4, 2010, 12:4 AM

The Backbeats on the second season of "The Sing-Off." Composed of the best a cappella singers from the University of Southern California and the University of California, Los Angeles, this group of 20-somethings incorporates disparate styles and tastes into one synthesized sound, fused together by a shared love of pop, R&B, and soul. These singers take a fresh, original approach to popular music with that old-school spirit. NBC/Harper Smith - Saturday, December, 4, 2010, 12:4 AM

Eleventh Hour on the second season of "The Sing-Off." Recognized as one of the nation's top high school a cappella groups, Eleventh Hour's studio recordings have been featured on Best of High School A Cappella and have won two Contemporary A Cappella Recording Academy awards. Eleventh Hour opened for LeAnn Rimes and The Beach Boys, plus sang backup for Kenny Loggins. The singers' youth and energy combine with musicianship that is beyond their years.NBC/Harper Smith - Saturday, December, 4, 2010, 12:4 AM

Pitch Slapped on the second season of "The Sing-Off." Founded in 2006, this group of students from the Berklee College of Music has won numerous International Championship of Collegiate A Cappella awards, including a recent triumph of 2nd place overall. Pitch Slapped's members offer a distinctive sound and infectious energy, with a unique grasp on a cappella. They have a sense of musicality that is apparent in their arrangements, solos and overall sound. NBC/Harper Smith - Saturday, December, 4, 2010, 12:4 AM