Panteleeva, Y., Ceschi, G., Glowinski, D., Courvoisier, D. S., & Grandjean, D. (2018). Music for anxiety? Meta-analysis of anxiety reduction in non-clinical samples. Psychology of Music, 46(4), 473–487. https://doi.org/10.1177/0305735617712424
Anxiety affects up to 28.8% of the population in Western countries
nxiety disorders are the most prevalent mental illnesses worldwide
Moreover, in the last decade, there has been a growing interest in an evidence-based approach to studying the impact of music listening on anxiety, as measured by self-report measures (subjective reactions toward a stressful situation) or psychophysiological markers (objective indicators of anxiety, such as increasing heart rate).
This is from a website that explains why differentiating instruction is important. It also includes ways to incorporate technology in the classroom to help differentiate lessons.