The process of recording a band or ensemble in the studio relies on many kinds of collaborative efforts across a wide range of professionals such as musicians, recording engineers, producers, record label staff and managers. Engineers and producers collaborate directly with the musicians, but part of their job description is also to facilitate a fruitful collaboration between the musicians themselves, enabling them to perform at their peak, both individually and as a collective. This paper takes a closer look at how cue-mix or foldback affects musical interplay and the collective performance, with a particular focus on jazz and other musics heavily reliant on interplay and improvisation - i.e., "in-the-moment" musical collaboration. This is investigated through 8 semi-structured interviews with professional producers, recording engineers and musicians with a combined experience of more than 200 years of making records. Selected findings from the interviews are discussed in light of research and writings on interplay and improvisation, including the seminal works of Monson, Berliner and Bailey. As these are preliminary findings from an ongoing PhD research project, no hard conclusions are drawn. There are however several interesting commonalities found in the interviews, which point to some possible recommendations.