Unicorn could be Nicole Scherzinger from PCD. She's been a judge on the US version of the show and recently been in country judging Australia Got Talent.
Also started in a rock band like Deni Hines.
Not a fan of Adam Brand. He had an affair with someone I worked with. The things she told me (while she still thought he was a good bloke) made me cringe and I lost all respect for him. To be fair this is close to 15 years ago now.
I've never heard of him either - that's two celebrities now I've never heard of
Edit - I just googled him, and the picture that came up, he looks like an Irish backpacker!