What does 'arrangement' mean in a musical context?

In a musical context, 'arrangement' refers specifically to the process of adapting a piece of music for different instruments or voices. This can involve altering the original composition to suit various styles, the instrumentation available, or the specific needs of a performance. An arrangement can include changing the orchestration, adding harmonies or counter-melodies, and adapting rhythms to fit the new context.

While creating a melody, performing live, and writing lyrics are all important aspects of music creation and performance, they are not what 'arrangement' specifically entails. Arranging is about taking an existing work and reinterpreting it to allow for different interpretations or to highlight certain elements of the music, making it a distinctive and valuable skill in the realm of music.