Table A1.

Questions of the inquiry.

Questions

In the following, the questions of the inquiry are described with their underlying intention.

How was it to be involved in music therapy?

The focus of this question was the overall experience of the participants, child as well as parents and siblings, of being involved with music therapy. The focus was on the general experience of the entire music therapy process.

How was it to play music in this way?

The focus was on the phenomenological subjective experience of interacting and collaborating with the music therapist when musicking, to find the participants’ descriptions of experiencing the musicking in detailed and concrete ways. The musicking is assumed to contain/encompass collaborative and interactive regulation.

What was the best/the worst?

In this question, the focus was on finding and exploring even more specific moments in the interaction and collaboration, moments with both a positive and negative experiential flavor.

Is there anything special you remember from when you played, sang, improvised?

This question was connected to the previous one, and was intended to deepen the exploration of memories from the music therapy process. It is assumed that moments of interaction and collaboration that stand out in memory carry a certain affective quality or intensity. As such, they were assumed to contain potential for change.

How was it to get music therapy during the HSCT/after the HSCT?

It was important to evaluate the participants’ experience of being involved in music therapy both during and after HSCT, to understand how this affected the experience of music therapy.

The therapist’s perspective: Ad hoc questions formulated when meeting the child and the parents.

According to the assumptions behind the format of the collaborative interview, the opportunity to explore collaborative and interactive qualities of a certain therapeutic intervention is connected to the therapist’s subjective perspective of the collaboration. Therefore, this theme of inquiry was explored to access the memories and experiences of the participants. This is further discussed in the Discussion section of the paper. The last two questions were intended to facilitate reflection by the participants on the overall process from a meta-perspective.