
Questions & Answers about deetto o utaou.
を marks the direct object of the verb. Here, the verb is 歌おう, from 歌う meaning to sing, so デュエット is the thing being sung.
So the structure is:
- デュエット = duet
- を = object marker
- 歌おう = let’s sing / I’ll sing
This is very similar to sentences like:
- 歌を歌う = to sing a song
- 国歌を歌う = to sing the national anthem
Even though duet is a type of performance, Japanese treats it as the object of 歌う here.
歌おう is the volitional form of 歌う.
- dictionary form: 歌う
- volitional form: 歌おう
The volitional form often means:
- let’s sing when inviting someone
- I’ll sing when expressing one’s own intention
In a sentence like デュエットを歌おう, the most natural interpretation is usually Let’s sing a duet.