Dàn hợp xướng phát âm rõ lời bài hát.

Dàn hợp xướng means choir or chorus.

• dàn can mean a group, ensemble, or arranged set
• hợp xướng means choral singing / chorus

Together, dàn hợp xướng is a standard way to say a choir. In this sentence, it is the subject.

Phát âm means to pronounce or to enunciate.

In everyday Vietnamese, it is often used for:

• pronouncing words in a language
• speaking clearly
• articulating sounds

In this sentence, it refers to the choir articulating the lyrics clearly. So it is not just about singing in general, but about how clearly the words are pronounced.

Because Vietnamese often puts words like rõ after the verb.

Here:

• phát âm = pronounce
• rõ = clearly / clear

So phát âm rõ means pronounce clearly.

This is very normal Vietnamese word order. English often puts clearly before or after the verb, but Vietnamese commonly uses this kind of verb + descriptive word pattern.

Lời bài hát means the lyrics of the song.

Breakdown:

• lời = words, wording, lyrics
• bài hát = song

So lời bài hát literally means the words of the song, which in natural English is the song lyrics.

Both are possible, but lời bài hát is more natural and compact.

Vietnamese often links nouns directly without của when the relationship is clear:

• lời bài hát = song lyrics
• tên trường = school name
• màu áo = shirt color

Using của is more explicit, but here it sounds heavier than necessary. So lời bài hát is the more natural choice.

Vietnamese nouns usually do not show singular/plural the way English does.

So lời here can be understood as:

• the words
• the lyrics

Context tells you that it refers to the lyrics as a whole, not just one word. In English, we would usually translate it as lyrics.

Yes, it is understandable and natural, especially if you want to emphasize pronunciation/enunciation.

However, in more everyday speech, people might also say:

• Dàn hợp xướng hát rõ lời bài hát.
• Dàn hợp xướng hát rất rõ lời.

These focus more on the idea that the choir sings the words clearly.
Your original sentence sounds a bit more focused on diction or articulation.

That version is less natural.

The more natural order is:

• phát âm rõ lời bài hát

In Vietnamese, rõ usually stays close to the verb it describes:

• nói rõ
• nghe rõ
• phát âm rõ

So keeping rõ right after phát âm sounds better.

Vietnamese does not use articles like a, an, and the the same way English does.

So:

• Dàn hợp xướng can mean the choir or a choir
• lời bài hát can mean the lyrics of the song or song lyrics

The exact meaning depends on context. In a normal translation, the choir is often the most natural English choice.

A simple way to read it is:

• Dàn hợp xướng = subject
• phát âm = verb
• rõ = complement/adverb-like word meaning clearly
• lời bài hát = object

So the pattern is roughly:

Subject + Verb + Clearly + Object

That gives: Dàn hợp xướng phát âm rõ lời bài hát.
= The choir pronounces the song lyrics clearly.

A few parts may be difficult for English speakers:

• xướng: the x is like an s sound in standard Vietnamese
• rõ: in standard northern Vietnamese, r is not the English r
• hợp and phát end in a clipped final p/t
• tones matter a lot

Tone pattern:

• Dàn = low-falling tone
• hợp = heavy low tone
• xướng = creaky rising/broken tone
• phát = rising tone
• âm = level tone
• rõ = creaky rising/broken tone
• lời = low-falling tone
• bài = low-falling tone
• hát = rising tone

If you are learning pronunciation, it may help to practice in chunks:

• dàn hợp xướng
• phát âm rõ
• lời bài hát

That makes the rhythm much easier.