Levi is up for her work on Natalie Portman-starring biopic Jackie while O'Halloran and German neo-classical experimentalist Hauschka are recognised for their Lion score. Justin Timberlake gets a nod for "Can't Stop The Feeling".
As expected, romantic musical La La Land dominates the categories, with two songs up for Best Original Song.
Best Original Song
Best Original Score
Jimmy Kimmel hosts the 89th Academy Awards, which take place on 26 February.