See this example properly formatted in the QUT Cite tool.
Standard in-text citation examples are in Getting started - In-text citation.
Composer, A. (Year). Title of work. Publisher.
John, E., & Taupin, B. (2004). Greatest hits: 1970-2002. Hal Leonard.
Published music scores are treated like books.
If only one score is used from an edited anthology, treat as for a chapter in an edited book.
Include a URL if that site is the only source of retrieval (e.g. posted online but no publisher).