Find the Composer | Midnight Halo 4 Guide
Last update: 11 May 2016
You'll be moved to the next room where, after killing several Crawlers, another portal opens. On right, you find a weapon stand. Next portal in the right upper part of this chamber, defended by Knights and Watchers.
You get to a room, which is an armory. Pick up weapon with zoom and incineration cannon. Go through another portal. Quickly run downstairs and melee attack a Knight.
On the right, you can see another portal. It's protected by Crawlers, Watchers and Knights (one has an incineration cannon). Go on the platform on right (few Crawlers will charge at your), from where you have a good firing position. Use an Autosentry if you have one. When you kill all, go through a portal.
Kill another group on the other side, using covers nearby portal. You will find here also a weapon stand, on right. Be careful and don't fall from the bridge. When you kill all, you'll have to defend this place. Most enemies will run from right (screen). After a first wave Cortana will support you with lasers.