One of the more surprising combos at university was Physics and Music. That was the degree, and the numbers were similar to those doing Computational Physics.
Imperial College actually used to offer a BSc Physics and Music Performance course[1] (it was suspended recently). This is notable because dual majors, even between similar/adjacent academic fields, are rare for UK undergraduate degrees.
[1] https://www.imperial.ac.uk/study/ug/courses/physics-departme...