Speaking before his performance, the teenager explained how he ended up becoming a lifeguard after getting kicked out of school.
Performing a rather cheeky take on Jason Miraz track I'm Yours, both Will.i.am and Danny pressed their buzzers to turn around.
Danny told the youngster: “That was one hell of a performance, a great song choice that suited you down to the ground. I thought you were fantastic"
Will.i.am added: "The character of your voice is star quality"
However Jessie J criticised: "The reason I didn’t turn around was that there were tuning issues."
Clearly emotional, Aleks had to then decide between Danny and Will.
He reasoned: "I’m really dazed at the moment... will you'd be a very good coach but you're more rapping... and I like Danny's band... I feel Danny!”
Watch [tag]Aleks Josh[/tag]'s blind audition on The Voice UK below...