Du artistoj atendas sur la scenejo.

Because -j marks the plural in Esperanto. The singular is artisto and the plural is artistoj.

• artisto = one artist
• artistoj = more than one artist

Since the sentence has du meaning two, the noun must be plural.

In Esperanto, numbers do not take a plural ending. Du always stays du.

So you say:

• du artistoj
• tri artistoj
• kvin artistoj

The noun shows the plural, not the number word.

Because artistoj is the subject of the sentence. In Esperanto, the -n ending marks the direct object, not the subject.

Here:

• Du artistoj = the ones doing the action
• atendas = are waiting

So du artistoj is the subject, and no -n is needed.

Because sur la scenejo shows location, not movement toward a place.

In Esperanto, after a preposition like sur, you normally do not use -n if you mean simple location:

• sur la scenejo = on the stage

You might use -n after a preposition if there is movement toward a place:

• sur la scenejon = onto the stage

But this sentence describes where they are waiting, so sur la scenejo is correct.

Atendas is present tense.

The ending -as means present. So atendas can mean:

• wait
• are waiting

Esperanto present tense often covers both the simple present and the English present progressive, depending on context.

Because a stage is usually thought of as a surface or platform, so sur meaning on is the natural choice.

• sur la scenejo = on the stage

Using en would mean in the stage, as if inside it, which is usually not what you mean.

La is the definite article, meaning the. It is used when the speaker has a specific stage in mind.

So sur la scenejo means on the stage, referring to a particular stage relevant in the situation.

Without context, Esperanto often uses la in places where English would also naturally say the stage.

This is a very useful vocabulary point.

• sceno = a scene
• scenejo = a stage

The suffix -ej- often means place for something. So scenejo is literally something like place for scenes/performances.

That is why scenejo means the physical stage, not just a scene in a play.

Not necessarily. Artisto can mean an artist in a broad sense, including a performer. In this sentence, because they are sur la scenejo, it very naturally suggests stage performers.

So depending on context, artistoj could mean:

• artists
• performers
• entertainers

The stage context strongly guides the interpretation.

By default, artisto is gender-neutral. It just means artist.

If you specifically want to say female artist, Esperanto has:

• artistino = female artist

So:

• artisto = artist, gender not specified
• artistino = female artist

In this sentence, artistoj simply means artists without specifying gender.

Yes. Esperanto word order is fairly flexible, because endings show the grammar clearly.

The basic sentence is:

• Du artistoj atendas sur la scenejo.

But you could also say:

• Sur la scenejo atendas du artistoj.

That changes the emphasis slightly, but the meaning stays essentially the same. The original order is very straightforward and neutral.