I don't think the male collaboration will be the first single though. She didn't specify that actually.
Anyways, hopefully he's someone relevant and the song is single worthy! A killer duet as the second single would be a great change from her usual anthem strategy.
On the other hand, I (sadly) doubt she can get someone as hot as Bruno/Sam on her album

What about Adam Lambert? I guess he'll be easy to book (

) and he's known for his killer voice.
Edit: OMG what if it's Jason Mraz? I ship him so hard
