mudae uisanggwa bunjangeun yeonseupsil ane isseo.

Yes. 무대 의상 is a noun phrase meaning stage costume or performance costume.

• 무대 = stage
• 의상 = costume, outfit, clothing used for a performance or special purpose

In Korean, nouns are often placed directly next to each other like this, so 무대 의상 works like stage costume(s) rather than a full possessive phrase like the stage’s clothes.

분장 usually means stage makeup, theatrical makeup, or sometimes costuming/disguise for a role.

In this sentence, it most naturally refers to makeup used for a performance. Depending on context, it can also include the broader idea of getting made up to look like a character.

So in a performance setting:

• 의상 = costumes
• 분장 = makeup / theatrical makeup

과 means and when connecting nouns.

So:

• 무대 의상과 분장 = stage costumes and makeup

A useful rule:

• use 과 after a noun ending in a consonant
• use 와 after a noun ending in a vowel

Since 의상 ends in a consonant sound, 과 is used.

More natural spoken alternatives are also common:

• 무대 의상이랑 분장
• 무대 의상하고 분장

But 과/와 is a standard, neat written form.

Yes. In 무대 의상과 분장은, the 는 marks the entire combined noun phrase as the topic.

So this means:

• 무대 의상과 분장 = stage costumes and makeup
• 는 = as for..., regarding...

Even though 는 is attached to the second noun, it applies to the whole phrase 무대 의상과 분장.

This is very normal in Korean. You do not need to put a topic particle on both nouns.

는 is the topic particle. It introduces what the sentence is about.

So 무대 의상과 분장은 means something like:

• As for the stage costumes and makeup, ...
• The stage costumes and makeup, ...

In many cases, 은/는 can sound contrastive too, depending on context. For example, it could subtly imply:

• The stage costumes and makeup are in the practice room
  (perhaps unlike some other things)

But without special context, it just marks the topic naturally.

Both are possible, but they are slightly different.

• 연습실에 있어 = it is at/in the practice room
• 연습실 안에 있어 = it is inside the practice room

Adding 안 makes the location more specific.

Breakdown:

• 연습실 = practice room
• 안 = inside
• 에 = location particle

So 연습실 안에 literally means inside the practice room.

안에 is made from:

• 안 = inside
• 에 = in/at/to, depending on context

Here it marks the location where something exists.

So:

• 상자 안에 있어 = it is inside the box
• 가방 안에 있어 = it is inside the bag
• 연습실 안에 있어 = it is inside the practice room

This is a very common pattern: [place] + 안에 있다 = to be inside [place]

있어 comes from 있다, which means to exist, to be present, or to be located.

In this sentence, it means that the costumes and makeup are located in a certain place.

So:

• 연습실 안에 있어 = are inside the practice room

Korean often uses 있다 where English uses to be for location.

Examples:

• 책이 책상 위에 있어. = The book is on the desk.
• 가방이 의자 밑에 있어. = The bag is under the chair.

있어 is the informal/plain form.

The same sentence can be said at different politeness levels:

• 연습실 안에 있어. = informal
• 연습실 안에 있어요. = polite everyday speech
• 연습실 안에 있습니다. = formal

So the choice here tells you about the speech level, not a change in core meaning.

Korean verbs do not usually change form for singular vs. plural.

So the same verb form can be used whether the subject is one thing or multiple things.

Examples:

• 의상이 있어. = There is a costume.
• 의상들이 있어. = There are costumes.
• 무대 의상과 분장이 있어. = There are stage costumes and makeup.

Number is usually understood from context, vocabulary, or explicit plural markers if needed.

Korean often leaves plural unmarked when the meaning is already clear or not important.

So 무대 의상과 분장 can naturally mean:

• stage costume and makeup
• stage costumes and makeup

depending on context.

Korean does have plural markers like 들, but they are not required in many cases, especially with things when the sentence is still clear without them.

The structure is:

무대 의상과 분장은 / 연습실 안에 / 있어.

This breaks down as:

• 무대 의상과 분장은 = topic
• 연습실 안에 = location
• 있어 = exists/is located

A natural formula is:

[thing/topic] + [place] + 있다

So this sentence follows a very common Korean word order pattern: Topic + Location + Verb

Yes, you could say:

무대 의상과 분장이 연습실 안에 있어.

That would sound a little different in nuance.

Very roughly:

• 은/는 = marks the topic; often feels broader, more general, or contrastive
• 이/가 = marks the subject more directly; often used when identifying or presenting information

So:

• 무대 의상과 분장은 연습실 안에 있어.
  = As for the stage costumes and makeup, they are in the practice room.

• 무대 의상과 분장이 연습실 안에 있어.
  = The stage costumes and makeup are in the practice room. / It is the stage costumes and makeup that are in the practice room.

Both are grammatical; the choice depends on context and emphasis.