Like his cousin, drummer Ross will be seeing if he has what it takes to make it in the music biz.
Stepping in front of Sir Tom Jones, will.i.am, Ricky Wilson and new coach Rita Ora, the 23-year-old will be hoping to impress with his rendition of Usher's 'Good Kisser', but will we see Liam backstage supporting him?!
If not, we're pretty sure the 1D star will be rooting for him!
Not exactly a newbie when it comes to the industry, Ross has had some musical experience already, drumming for big names such as The Saturdays, Union J and Ella Henderson.
Wanting to make it on his own as a solo performer, the young hopeful is now shining the spotlight on his drum kit and taking to the mic himself.
And we reckon having a cousin in the world's biggest boyband must have come in handy for his pre-audition prep.
Four years ago Liam was doing exactly the same as Ross as he re-auditioned for The X Factor in 2010.
Knowing all too well what it's like to sing in front of a judging panel, Liam wowed Simon Cowell, Louise Walsh, Chery Fernandez-Verisini and stand-in judge Natalie Imbruglia with his performance of 'Cry Me A River'.
He made it through to bootcamp, where he was then put together with Harry Styles, Louis Tomlinson, Zayn Malik and Niall Horan to form One Direction.
Since the show the boys have gone onto top the charts, sell-out worldwide tours and recently, 1D made US chart history as they bagged themselves four consecutive number one albums.
Liam could definitely dish out a few tips, then!
Meanwhile, Ross isn't the only Voice hopeful to already have a celebrity link.
Coronation Street actress Kym Marsh was seen supporting her daughter Emily at her blind audition. Despite no coaches turning for her, Kym has said Emily is still determined to pursue her dream to be a singer.
And JLS star JB Gill was also at the blind auditions to support his cousin Marc Armstrong. Having been through a similar process on The X Factor himself back in 2008, he knows exactly how nerve-wracking it can be.
Unfortunately, Marc didn't make it through either, although he did receive a lot of positive feedback from the coaches.
Fingers crossed Ross has better luck!
The Voice UK continues this Saturday 31 January at 7pm on BBC One.
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