ornamentation
n. uncountable C1 Advanced US //ˌɔɹnəmɛnˈteɪʃən// UK //ˌɔːnəmˈɛntˈeɪʃən// or·na·men·ta·tion
n. the extra notes or decorations added to a piece of music to make it sound more beautiful or interesting. It is like the extra details a singer or musician adds to a simple melody.
n. the addition of decorative notes or embellishments to a musical line. Often refers to the specific techniques used by a performer to enhance the expressiveness of a melody.
The singer added some beautiful ornamentation to the final verse.
In Baroque music, ornamentation was expected to be performed by the musician rather than written into the score by the composer.
The pianist's intricate ornamentation transformed the simple folk melody into a complex, shimmering display of technical mastery that captivated the audience.
From ornament + -ation.