This chapter builds on the recording techniques in previous chapters to introduce the most powerful and flexible (but also the most challenging) method of one-room ensemble recording, whereby each instrument or group of instruments has their own independent microphone setup or ‘peer array’. The concepts of the Meld and the Ghost are introduced (alongside Backdrop and Focus) to help discussion, and two more in-depth ensemble-recording case-studies are provided to help consolidate practical understanding of all the factors involved. Detailed pre-session planning is recommended, considering the ensemble's acoustic balance and physical layout; the desired depth perspective and stereo width of each ensemble component; and any signal-processing you anticipate using during the production process. Peer-array recordings must be mixed while recording in order to properly evaluate the recording techniques, and the sound of that mix can dramatically impact on the psychological dynamics of the session, as can how you schedule and pace the workflow. There is also advice on kicksnare/squash mics, editing ensemble recordings, band-rehearsal tactics, and minimal drum miking.