Thành viên hợp xướng hát đúng cao độ.

A word-by-word breakdown is:

• thành viên = member
• hợp xướng = choir, choral singing
• hát = to sing
• đúng = correct, correctly, right
• cao độ = pitch

So the sentence is built very straightforwardly: [choir member] + [sing] + [correct pitch].

Vietnamese often puts nouns next to each other, where the second noun describes the first.

So:

• thành viên = member
• hợp xướng = choir / choral

Together, thành viên hợp xướng means choir member or member of a choir.

English often needs of, but Vietnamese frequently does not. If you want a fuller version, you could also say thành viên của dàn hợp xướng, where của explicitly means something like of.

Because hát is already the main verb.

là is usually used in sentences like:

• Anh ấy là giáo viên = He is a teacher

But here the sentence is not saying what the choir member is. It is saying what the choir member does:

• Thành viên hợp xướng hát... = The choir member sings...

So là would not be used.

It means to sing at the correct pitch or to sing in tune.

Here:

• hát = sing
• đúng cao độ = at the right pitch

This is a natural Vietnamese way to talk about accurate musical pitch. It does not just mean sing well in a general sense. It specifically refers to pitch accuracy.

The best way to understand it is that đúng combines with cao độ:

• đúng cao độ = correct in pitch / at the right pitch

So the sentence is basically saying:

• sing + correctly in terms of pitch

Vietnamese often uses đúng + noun in this way:

• đúng giờ = on time
• đúng chỗ = in the right place
• đúng tên = the correct name
• đúng cao độ = at the correct pitch

So yes, learners often find it easiest to treat đúng cao độ as a chunk.

Not exactly.

• cao độ = pitch, pitch level
• nốt = note
• tông = key / tonal range, depending on context

So hát đúng cao độ focuses on singing at the correct pitch.

You may also hear:

• hát đúng nốt = sing the right notes
• hát đúng tông = sing in the right key

These are related, but they are not identical in meaning. Cao độ sounds a bit more technical or music-related.

By itself, it can be interpreted from context.

Vietnamese nouns usually do not change form for singular vs. plural, and they also do not use articles like a or the.

So thành viên hợp xướng could mean:

• a choir member
• the choir member
• choir members in a general sense

If you want to be specific, Vietnamese adds other words:

• một thành viên hợp xướng = one / a choir member
• các thành viên hợp xướng = choir members
• người thành viên hợp xướng đó or more naturally thành viên hợp xướng đó = that choir member

Context usually tells you which meaning is intended.

The sentence itself does not mark tense.

Vietnamese verbs do not change form the way English verbs do. So hát can mean:

• sing
• sings
• is singing
• sang

depending on context.

If the speaker wants to make the time clearer, they can add time words or aspect markers, for example:

• đã hát đúng cao độ = sang / has sung at the correct pitch
• đang hát đúng cao độ = is singing at the correct pitch
• sẽ hát đúng cao độ = will sing at the correct pitch

Without those, the sentence is a general statement.

Yes. The structure is very normal:

• Subject: Thành viên hợp xướng
• Verb: hát
• Complement: đúng cao độ

So it follows a simple subject–verb–complement pattern.

Vietnamese often keeps this kind of order very directly. Once you know the vocabulary, the sentence is quite transparent grammatically.

Yes, depending on context.

This sentence is understandable, but some speakers might more naturally say things like:

• Thành viên dàn hợp xướng hát đúng cao độ.
• Ca sĩ hợp xướng hát đúng cao độ.
• Thành viên trong dàn hợp xướng hát đúng cao độ.

These alternatives make the choir idea a little more explicit. But the original sentence is still good for learning the structure and vocabulary.

The main thing is tone accuracy and final consonants.

A few points learners often need to watch:

• thành and viên should be clearly separate
• hợp ends in -p, so it is short and clipped
• xướng has a different vowel quality from English song
• hát also ends sharply in -t
• đúng should not sound like English doong
• độ needs its own tone and should not be flattened

Since this sentence is about singing the right pitch, it is a nice one to practice with careful pronunciation too.