She has gravitated toward the stripped-down aesthetic of original-instrument ensembles.
She may have been raised around these ensembles, thus causing her tendency to like them since they gave her a sense of comfort. 
mnli hypothesis: She may have been raised around these ensembles, thus causing her tendency to like them since they gave her a sense of comfort.  premise: She has gravitated toward the stripped-down aesthetic of original-instrument ensembles.