The Jonas Brothers never cease to amaze us.

During an NPR Tiny Desk concert released Monday, the boys transformed three songs off their Happiness Begins album into swinging jazz numbers, proving that they can do just about anything.

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Beginning with their No. 1 hit “Sucker”, Kevin and Nick stuck to playing their guitars while Joe wielded a small, multi-coloured tambourine. Trading off vocals, Nick and Joe assumed higher falsettos.

Kevin, Joe, and Nick slowed things down a bit for their next song “I Believe”.

“There’s so much negativity out there, we kind of felt like, if we could just bring a little bit of light into people’s lives then we’re doing our job,” Nick introduced the song.

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Performing their third song “Only Human”, the boys put a quirky spin on the ’80s-inspired tune by using a toy piano and a quacking buzzer.

Their set didn’t end there, however. Being that it was Joe’s 30th birthday, an impromptu “Happy Birthday” sing-along broke out

Watch the full video up top.

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Relationship Retrospective: Jonas Brothers