Ketuvim

In Masoretic manuscripts (and some printed editions), Psalms, Proverbs and Job are presented in a special two-column form emphasizing the parallel stichs in the verses, which are a function of their poetry.

These three books are also the only ones in the Hebrew Bible with a special system of cantillation that is designed to emphasize parallel stichs within verses.

[5] According to T. Henshaw, as early as 132 BCE some references suggesting that the Ketuvim was starting to take shape, though it lacked a formal title.

All Jewish liturgies contain copious extracts from the Psalms, but these are normally sung to a regular recitative or rhythmic tune rather than read or chanted.

Some Reform communities that operate a triennial cycle choose haftarot on Shabbat morning from Ketuvim as well as Neviim.

In some Near and Middle Eastern Jewish traditions, the whole of Ketuvim (as well as the rest of the Tanakh and the Mishnah) is read each year on a weekly rota, usually on Shabbat afternoons.

However, the Ashkenazic yeshiva known as Aderet Eliyahu, in the Old City of Jerusalem, uses an adaptation of the Syrian cantillation-melody for these books, and this is becoming more popular among other Ashkenazim as well.

Western targumim exist on Sifrei Emet, on the Five Megillot and on Chronicles, i.e. on all the books of Ketuvim besides Daniel and Ezra (which contain large portions in Aramaic anyway).

In fact, the Babylonian Talmud explicitly notes the lack of a Targum to Ketuvim, explaining that Jonathan ben Uzziel was divinely prevented from completing his translation of the Bible.

A more prosaic explanation may consist in the lack of regular formal readings of Ketuvim in the synagogue (except the five Megillot), making it unnecessary to have an official system for line-by-line translation.