Koreografi son provada değişti.

A natural breakdown is:

• koreografi = choreography
• son = last, final
• provada = in/at the rehearsal, specifically in the final rehearsal
• değişti = changed

So the sentence is literally something like:

• The choreography changed in the final rehearsal.

Turkish often puts the verb at the end, so değişti comes last.

Son usually means last/final, and it is very natural in phrases like:

• son prova = the final rehearsal
• son gün = the last day
• son bölüm = the final episode

Sonuncu is more like the one that is last in order. It is not impossible, but in this sentence son prova is the normal, idiomatic choice.

So:

• son prova = the final rehearsal
• sonuncu prova = the rehearsal that is last in a numbered sequence

In everyday Turkish, son is the more natural word here.

Provada comes from:

• prova = rehearsal
• -da = a locative ending meaning in / at / during

So:

• prova → rehearsal
• provada → in/at the rehearsal

In this sentence, son provada means in the final rehearsal or during the final rehearsal.

The ending is -da here because of normal suffix rules:

• the last vowel in prova is a, so the suffix uses the back-vowel form: -da
• the word ends in v, which is voiced, so the suffix uses d, not t

That is why you get prova + da = provada.

Also, Turkish writes this as one word. Since prova is a common noun, you do not write prova'da. Apostrophes are mainly used after proper nouns.

Because son is an adjective here, and in Turkish adjectives do not take the case ending. The case ending goes on the noun.

So:

• son prova = final rehearsal
• son provada = in the final rehearsal
• son provaya = to the final rehearsal
• son provadan = from the final rehearsal

This is a very common Turkish pattern: the noun carries the grammatical ending, not the adjective before it.

Değişti comes from the verb değişmek, which means to change or to become different.

Formation:

• değiş- = verb stem
• past tense ending -di
• after the voiceless consonant ş, that ending becomes -ti

So:

• değişmek = to change
• değişti = changed

There is no extra ending for he/she/it in the simple past here, so değişti by itself means:

• it changed
• he changed
• she changed

In this sentence, the subject is koreografi, so it means the choreography changed.

Grammatically, değişti means changed rather than a true passive was changed.

So the sentence literally says:

• The choreography changed in the final rehearsal.

If you wanted a clearer passive idea, Turkish would typically use a form like:

• Koreografi son provada değiştirildi.
• The choreography was changed in the final rehearsal.

That said, Turkish sometimes uses değişmek in contexts where English might naturally say was changed, especially when the focus is on the result rather than on who did it. But the actual form here is not passive.

Turkish does not have a direct equivalent of the English definite article the.

So a bare noun like koreografi can mean:

• choreography
• the choreography

The exact meaning depends on context.

Likewise:

• son prova can mean the final rehearsal
• koreografi can mean the choreography

If Turkish wants to be more specific, it can use words like:

• bu = this
• o = that

For example:

• Bu koreografi son provada değişti.
• This choreography changed in the final rehearsal.

But in your sentence, no article is needed.

Yes. Koreografi is the subject.

You can tell because:

• it has no object marking
• the verb değişti is intransitive here
• the sentence structure matches subject + time/place phrase + verb

So:

• koreografi = subject
• son provada = time/place setting
• değişti = verb

In other words, the sentence is about what happened to the choreography: it changed.

The given order is natural, but Turkish word order is flexible.

Your sentence:

• Koreografi son provada değişti.

Another very natural version:

• Son provada koreografi değişti.

Both are correct. The difference is mostly about emphasis:

• Koreografi son provada değişti puts koreografi first, so the choreography is the topic
• Son provada koreografi değişti puts the time phrase first, so in the final rehearsal gets more emphasis

The verb usually stays at the end in neutral Turkish sentences.

In değişti, the letter ğ is usually not pronounced like a strong consonant in English.

A rough learner-friendly pronunciation is:

• deyişti

The ğ often lengthens the vowel or creates a slight glide rather than a hard sound.

So the whole sentence is approximately:

• ko-re-o-gra-fi son პრო-va-da deyiş-ti

The exact pronunciation depends a bit on accent and speaking speed, but the key point is that ğ is usually soft and subtle, not a strong g sound.