I know they give credits in songs for both the arranger and the composer. I am wondering what do each of them do? How much of the song is finished before it is given to the arranger?
I understand what a composer is and I understand what an arranger is (at least I think I do...). I also understand what an arrangement of a song is. What I don't understand is when I'm listening to a song, am I fanboying for the composer or the arranger's contribution. Like does tsuku just give chord changes and harmonization for the melody before the arranger gets it, or is the song largely complete when the arranger gets it and the arranger just oversees recording and programming of it into a digital audio workstation?
Is there any articles online about the music making contributions that people have. And even better are there examples of the bare composition and then the finished arrange version. It might be equally helpful to have a song that was arranged more than once, so I can compare what the arrangers did. (was the best updated album the best example of this I might have?)
I'm planning on writing a detailed fan reaction to the last album the girls dropped and I need to know this distinction before I get too into writing it.