Most Ashkenazic Scripture reading that I have heard uses a different trope tune for each of these readings:
- Shabbat, Yom Tov and weekday Torah reading
- Haftarah reading
- High Holiday Torah reading
- Ruth, Kohelet (Ecclesiastes), Shir Hashirim (Song of Songs)
- Eicha (Lamentations)
2 (main) questions:
- Why do we need a different rope for each of these? Why not use the same one for all? When was this decided?
- Who created or organized the tunes that we use? I know that there are some variations such as Chaba"d, Germanic, etc. I'm more curious who and when the initial system of the various tunes began.
My question mentions Ashkenazic as that is what I am familiar with. If there are Sephardic traditions that follow this theme of having different tunes throughout the year, feel free to describe and comment on them, as well.