"Musical illustrations are labeled Example (usually abbreviated assigned an arabic numeral, and given a caption: “Ex. 1. Pyotr Ilich Tchaikovsky, Symphony no. 6 in B, opus 74 (Pathétique), finale.” A label and caption ordinarily appear directly below the example and have the same one-inch margins as the text of the paper."
"Formatting a Research Paper." The MLA Style Center, The Modern Language Association, 2016, https://style.mla.org/formatting-papers/#tablesandillustrations.