How to integrate scientific resources in user research?

I am about to conduct my first user interviews in order to find out why and how musicians are collaborating in music production with digital audio workstations.

Having found several resources that seem to give answers to the first question of why people are collaborating in creative processes, I am now wondering how I should be integrating these insights into the research and whether I should be asking this question at all. Can I expect something new and valuable from asking questions of which I feel like I already know the answer to?