In the small study (with 21 young adults, total), participants with different genre preferences were exposed to entire songs while in an MRI. They were exposed to a liked genre, a disliked genre, and their self-reported favorite song. They were looking for changes in brain activity that related to preference for the music being listened to, as opposed to changes that might occur based on differences in the musicality or lyrics of the tune. If your favorite artist is Beyoncé, her dance anthems probably make you feel as focused as a classical music lover listening to Beethoven — and that's pretty crazy. The researchers wanted to understand how people could have the same feelings associated with their favorite music (greater self-reflection and inward thought) regardless of genre.