While Team Tom played it safe with a cover of talent show favourite River Deep Mountain High, Will went all out.
He and his three singers Lucy O'Byrne, Sheena McHugh and Vikesh Champaneri performed a mash up of That’s The Way (I Like It) and Get Down Tonight by KC & The Sunshine Band.
The trio got funky with the disco hits, with Will.i.am branding his teams the 'funketeers'.
Will and Vikesh donned fake afros - which both seemed to rather LOVE - with Will also singing into an old-school stick microphone.
Will tweeted after the performance: "#teamwill vote for the #motherFUNKERs Vikesh Lucy and sheena @teamWILL "
And as for the reaction from viewers...
— Kevin Mc Stravock (@kevinmcstrav) March 28, 2015
— TheVoiceUK FanPage. (@TheVoiceUK2015) March 28, 2015
the voice has just transported me to a different century
— Aisha (@letmalikjosh) March 28, 2015
Re-watch Team Will's performance above!