Koret øver hver tirsdag.

Because koret is the definite form of the noun, meaning the choir.

• et kor = a choir
• koret = the choir

Norwegian often adds the definite article to the end of the noun instead of using a separate word like the in English.

Since kor is a neuter noun, its definite singular ending is -et:

• et kor → koret

Øver is the present tense of the verb å øve.

• å øve = to practise / to rehearse
• øver = practise(s) / is practising / rehearses

In this sentence, it describes a habitual action, so in English it is often translated as practises every Tuesday or rehearses every Tuesday.

It can mean both, depending on context.

With koret (the choir), English often prefers rehearse, because choirs usually rehearse rather than practise in natural English.

So:

• Koret øver = The choir rehearses / The choir is rehearsing

But the Norwegian verb itself is still å øve.

After hver (every / each), Norwegian normally uses the noun in the singular.

So:

• hver tirsdag = every Tuesday

This is different from English, where learners may think of something like every Tuesdays, but that is not correct in either language.

You can think of it as:

• hver
  • singular noun

Examples:

• hver dag = every day
• hver uke = every week
• hver tirsdag = every Tuesday

Norwegian usually does not use a preposition like on before days of the week in expressions like this.

So English says:

• on Tuesday
• every Tuesday

But Norwegian says:

• tirsdag
• hver tirsdag

No extra preposition is needed here.

Yes. Norwegian often allows a time expression to come first.

You have:

• Koret øver hver tirsdag.

You can also say:

• Hver tirsdag øver koret.

Both are correct, but the emphasis is slightly different.

A very important rule is that Norwegian is generally a V2 language in main clauses. That means the verb comes second.

So when hver tirsdag moves to the front, the verb still stays in second position:

• Hver tirsdag
  • øver
    • koret

Not:

• Hver tirsdag koret øver ❌

Yes. Norwegian present tense often covers both the English simple present and present continuous, depending on context.

So øver can correspond to:

• rehearses
• is rehearsing
• practises
• is practising

In this particular sentence, because of hver tirsdag, the natural meaning is a regular repeated action:

• The choir rehearses every Tuesday.

In Norwegian, days of the week are normally written with a lower-case letter.

So:

• mandag
• tirsdag
• onsdag

This is different from English, where Tuesday is capitalized.

You add ikke (not), usually after the verb in a main clause:

• Koret øver ikke hver tirsdag.

This means:

• The choir does not rehearse every Tuesday.

So the basic pattern is:

• subject + verb + ikke + rest

Yes, Koret øver hver tirsdag is standard Bokmål.

In Nynorsk, a common equivalent would be:

• Koret øver kvar tysdag.

Some differences:

• hver → kvar
• tirsdag → tysdag

The overall structure is still the same.