The difference between Section A and Section B of the Unified Music Examination mainly lies in the different institutions. The teaching staff and school strength of Section A colleges are generally greater than those of Section B colleges.

Section A of the Music Unified Examination is generally admitted to art undergraduate colleges in advance, including 211 Project Colleges, key colleges and ordinary undergraduate colleges, while Section B of the Music Unified Examination is the second batch admitted. Secondary universities, including independent colleges, private colleges and Sino-foreign cooperative education majors. Specifically, the teaching staff and school strength of the A-stage colleges are generally stronger, while the B-stage colleges are relatively weak.

The above is only a rough comparison, and specific situations need to be evaluated based on factors such as specific institutions and regions.