Pentatonix have been crowned the winners of The Sing-Off's third season, beating out runners-up Dartmouth Aires and third place finishers Urban Method.
Pentatonix were declared the champions of the NBC a cappella competition during Monday night's finale and were awarded $200,000 (£129,011) and a Sony recording contract prize.
Scott Hoyingg said following the win: "I don't even know what to say, I can't believe it. I'm so humbled to have shared the stage with my best friends. They're my family. And these 16 amazing groups... I can't believe this is happening!"
Judges Ben Folds, Sara Bareilles and Shawn Stockman also offered career advice to the Top 3, with Ben telling Pentatonix: "You guys have potential to take a capella into the mainstream.
"I think you should get out there and work with the best writers in the business, the best producers, and get out there. When you're on the road, stay at Night's Inn, it's very cheap."
Urban Method received a pep talk from Shawn, who claimed that the group "defines determination", explaining: "Throughout the whole season you rose to the occasion and you kept fighting.
"We've seen your story unfold throughout the season and I'm most proud of you because you never gave up and you showed how much better you can become with each episode."
Meanwhile, Sara told Dartmouth Aires: "You guys have hit the sweet spot with your big sound and your theatricality and personality. As long as you continue to harness the energy and focus and let the music be first, you're headed in the right direction.
"I want to see you all on Broadway like, tomorrow."
The Top 3 also had two chances to perform again. For the first round, the groups lent their voices to a charity of their choosing, filming public service announcements for each organisation in the hope of furthering their aim and visiting with those affected.
Pentatonix worked with The Trevor Project, a crisis intervention programme geared towards lesbian, gay, bisexual and transgender youth.
They then took to the stage live to perform David Guetta's 'Without You', featuring Usher. Their version was a percussion-filled affair, giving each of the members a chance to show off their belting abilities.
"You guys are making me cry already!" exclaimed Sara. "There's one word to describe you guys: daredevils. You take these songs apart and put them back together and it always delivers. I'm so proud of you."
Ben thought that Mitch and Kevin make a "sick bass combo" and loved that the whole group delivers surprises and never lets on what's coming next. He also appreciated that their delivery is "focused and heartfelt", joking "other than that, you're awful".
Shawn praised Kirsty's sweet and sassy style and said that Mitch has really had a laugh on those who used to bully him over his "gorgeous" voice. He declared the group "amazing" and said that they have been impressive from the beginning.
Urban Method were up next, working with the Sickle Cell Project in California, where they put together meals for families who were struggling to put food on the table because of difficulties of the illness and spending time with those affected. Particularly affected were Kim Dawson and Myke Charles, both of whom have family members who have sickle cell disease.
They then hit the stage for a live rendition of 'Stereo Hearts' by Gym Class Heroes featuring Adam Levine. The track was another great example of their incredible skills as innovators in the hip-hop style and brought the house down, earning them a standing ovation.
Shawn admitted that he has never heard "head-nodding a capella", and praised them for creating an entirely new genre. He also praised Myke for showing his originality rather than covering another artist's raps.
Sara gave a shout out to the ladies, praising Katie, Kim and Liz for their growth, strength and determination throughout the season. "You have developed as artists, and that's always exciting to watch," she added.
Ben described their sound as "massive", attributing it to the production they bring to their music as well as the confidence they have about the group.
Dartmouth Aires chose to work with Saving Strokes, a rehabilitation programme using golf to help stroke victims. The experience was an emotional one for Michael, whose mother recently suffered a stroke and who knew first-hand the difficulty of recovery.
For their live performance, the group put a new spin on Meat Loaf's 'Paradise by the Dashboard Light' featuring vocals by Amy from former group Delilah. The rendition was an energetic one, with amazing harmonies and nearly perfectly pitched throughout. They also grabbed a well-earned standing ovation.
"There are hundreds of university a capella groups out there... lots of infectious energy, but you guys stick out because you have focus and a niche and a theatrical edge to you," Ben gushed following the performance. He also singled Michael out as a wonderful lead.
Shawn called them "damn good", commending the group for always giving it their all and never holding back and admitting that he can never take his eyes off the stage whenever they sing. Sara agreed, pinpointing the fun they have on stage as something that makes them particularly great to watch. "Congratulations, you guys," she added.
For the second round, each of the groups took to the stage with one of the Sing-Off team for another performance. Pentatonix were joined by host Nick Lachey for the 98 Degrees hit 'Give Me Just One Night (Una Noche)', while Sara Bareilles teamed up with Urban Method to perform her new single 'Gonna Get Over You'.
Finally, Dartmouth Aires and Ben Folds came together for an interactive performance, leading the audience in a sing-along with a three-part harmony of 'Not The Same'.
All of the Top 10 groups returned, with all the female voices of the competition coming together to perform Aretha Franklin's 'You Make Me Feel (Like a Natural Woman)', while the men took on Bruce Springsteen's 'Born To Run'. Both were impressive, allowing each and every singer to showcase his or her unique talents.
Afro-Blue, who were eliminated from the competition last week, also performed with Smokey Robinson for a new take on the classic You Really Got a Hold On Me'.
For the opening number, the Top 3 groups came together for a performance of Michael Jackson's 'The Way You Make Me Feel'.
The Sing-Off airs on NBC.