A refrén rövid és könnyű.

A is the Hungarian definite article, so it means the.

In Hungarian, the definite article has two forms:

• a before most consonant sounds
• az before vowel sounds

So:

• a refrén = the refrain
• az alma = the apple

In Hungarian, the verb to be is usually left out in the third person singular present tense when you are saying something like X is Y.

So Hungarian says:

• A refrén rövid. = The refrain is short.
• A refrén könnyű. = The refrain is easy.

But there is no separate word for is in these sentences.

This is completely normal Hungarian grammar.

Refrén is a noun meaning refrain or chorus in a song.

It is a loanword used in Hungarian musical vocabulary. In this sentence, it is the subject.

A useful thing for English speakers to know is that Hungarian nouns do not have grammatical gender, so refrén is not masculine, feminine, or neuter.

Here, rövid and könnyű are predicate adjectives: they are describing what the subject is like, not directly attaching to the noun inside a noun phrase.

So:

• A refrén rövid. = The refrain is short.
• A rövid refrén = the short refrain

That is an important difference:

• A rövid refrén → adjective directly before the noun
• A refrén rövid → The refrain is short

In your sentence, the structure is the second one.

És means and.

It joins the two adjectives:

• rövid és könnyű = short and easy

It is a very common basic conjunction in Hungarian.

No. Könnyű can mean both:

• easy
• light in weight

The intended meaning depends on context.

For example:

• Ez a feladat könnyű. = This task is easy.
• Ez a táska könnyű. = This bag is light.

In A refrén rövid és könnyű, the meaning is clearly easy, not light.

A few pronunciation points matter here:

• ö is a rounded vowel, somewhat like the vowel in German schön or French peu
• é is a long e, like ay in say, but steadier
• ű is a long rounded vowel, similar to German ü, but long

Also:

• Hungarian stress is usually on the first syllable of each word

So roughly:

• refrén → stress on re
• rövid → stress on rö
• könnyű → stress on kö

A special note about könnyű: the ny is a separate Hungarian sound, like ny in Spanish señor or the ny sound in canyon.

Because Hungarian works very differently from languages like German, French, or Spanish.

In Hungarian:

• nouns do not have grammatical gender
• adjectives do not agree in gender
• adjectives usually do not change just because a noun is definite

So in a sentence like this, rövid and könnyű stay in their basic form.

That makes things simpler for English speakers in some ways.

Yes. Hungarian word order is more flexible than English, and it often changes emphasis rather than basic meaning.

The neutral sentence is:

• A refrén rövid és könnyű.

But you could also say:

• Rövid és könnyű a refrén.

This version puts more focus on short and easy.

So the basic meaning stays the same, but the emphasis changes.

It is in the nominative case, which is the basic dictionary form and the usual case for the subject of a sentence.

There is no special ending here because refrén is simply the subject: the thing being described as short and easy.

Yes. Then the noun and the predicate adjectives would normally be plural.

For example:

• A refrének rövidek és könnyűek. = The refrains are short and easy.

So compared with the singular:

• refrén → refrének
• rövid → rövidek
• könnyű → könnyűek

This is useful because it shows that the sentence you have is clearly singular.