This chapter builds on the content of the previous chapter by examining how to overdub line-level electronic instruments such as keyboards alongside a backing track, and advising how best to deal with the musician during that process. This involves detailed session preparation of studio layout, written materials, creature comforts and session framing, as well as an understanding of your recording system's monitoring facilities, latency delays, and punch-in recording methods. Starting recording the moment the musician is ready is crucial, and once recording's underway it's also important to take detailed notes, including to-record and track lists, recall notes, and session minutes, and also to use any opportunity to improve the sonics and help the performer evaluate the emotion, balance, phrasing, articulation, and pace of their performance. Other related topics discussed include recording with processing/effects, recording MIDI performances, and building productions from scratch.