Classical singer competition 2016 - Second Round repetoire

Can anyone who has done the classical singer competition tell me, what types of songs should round two consist of? Someone told me one must be in English, but I thought it did not matter as long as the songs were contrasting in style.

From their web site:
Competition-specific Guidelines:Classical Competition -
Singers should have contrasting selections (art songs or arias), preferably one in a language other than English, at a level appropriate to your vocal development.