OET interlinear JOB 21:12

uW Translation Notes:

Note 1 topic: figures-of-speech / explicit

יִ֭שְׂאוּ כְּ⁠תֹ֣ף וְ⁠כִנּ֑וֹר

sing according,to_tambourine and,harp

The implication is that the children lift up these musical instruments in order to play them. You could indicate that in your translation if it would be helpful to your readers. Alternate translation: [They play the tambourine and the harp] or [They play tambourines and harps]

Note 2 topic: writing-pronouns

יִ֭שְׂאוּ & וְ֝⁠יִשְׂמְח֗וּ

sing & and,they_rejoice

In this verse, the pronouns They and they refer to the children of wicked people, not to wicked people themselves. It may be helpful to clarify this for your readers. Alternate translation: [Their children lift up … and those children rejoice]

Note 3 topic: figures-of-speech / genericnoun

כְּ⁠תֹ֣ף וְ⁠כִנּ֑וֹר & עוּגָֽב

according,to_tambourine and,harp & flute

Job is not referring to a specific tambourine or harp or flute. He means those musical instruments in general. It may be more natural in your language to express this meaning by using plural forms. Alternate translation: [tambourines and harps … flutes]