If you would like to be considered for a chorus/supporting role then do prepare an extract from one of these two songs. There is a spotify link to the whole song and the extract you need to prepare is on the sheet music. Use this as a guide - copy what the singers on the Spotify link sing.
As with the principal audition choreograph gestures, blocking and think of the emotions behind the words you are saying. E.g. act through the words of the song, express the feeling through your body language and facial expressions.