Benji Madden is Seal fan

Benji Madden is worried he's "weird" after saying he could listen to Seal sing all night.

The musician's brother Joel Madden is a mentor on the Australian version of The Voice, alongside Seal, Keith Urban and Delta Goodrem.

Benji has been vocal about supporting his brother via Twitter and has also praised the other judges.

"I Could listen to @seal sing and @KeithUrb and play guitar all night #TheVoiceAU Wait. Did that sound weird? (sic)" he joked on the social networking website.

Each coach picked a famous face to help their team, before the battle stages of the contest. That sees two hopefuls performing the same song, with the main mentors choosing one to continue on and the other to leave the competition.

Joel asked Benji to help him out, which Benji was thrilled about.

"Shout out to @TheVoiceAU & @JoelMadden for having me on to mentor the battle rounds. I don't envy the coaches havin to make tough decisions (sic)," he wrote.

Seemingly worried he was gushing too much, Benji was then quick to poke fun at his brother.

"I almost didn't notice @JoelMaddens hair @TheVoiceAU can't we get him a hairstylist Lol ahhhh tht Joel (sic)," he joked.