"Day 21: Who would you like f(x) to have a collaboration with? This can be with K-Pop artists or even non k-pop artists"
Amber with... just about anyone really. She keeps saying that she's been making music with other people (Ailee, Rome, I think Noizebank or at least Gen Neo, and Min) but nothing's come out! I wonder if it's just that SM doesn't really allow outside collabs to be released? Gen Neo posted that originally Goodbye Summer was a duet between him and Amber, and when someone asked for it to be released if they had spare time, he said "spare time" wasn't the issue, so I always wondered if SM blocked it. So crushed that we'll likely never hear that. :( Collabs like those are probably our best bet of hearing her sing more.
As a band I'd love to see them do something with non-SM artists, but I keep thinking of K-pop inter-group collabs as being quite cheesy. Daft Punk collab would be amazingggg but probably wouldn't showcase their vocals very much.