paenkeulleop chinguga baendeudo bol gyeom gongyeonjange iljjik wa.

In Korean, one noun can directly modify another noun without any extra word in between.

• 팬클럽 = fan club
• 친구 = friend

So 팬클럽 친구 means something like:

• a friend from the fan club
• a fan-club friend
• a friend who is in the fan club

This kind of noun + noun combination is very common in Korean.

가 is the subject marker. It marks 친구 as the subject of the sentence: the friend is the one doing the action.

• 친구가 = the friend / a friend as the subject

If it were 친구는, the nuance would be different. 는 often marks the topic and can add contrast or background information.
With 친구가, the sentence feels more like it is simply identifying who comes early.

도 means also, too, or sometimes even.

So 밴드도 means:

• the band too
• also the band

It suggests that seeing the band is one of the things involved. There is usually an idea like in addition to something else.

Yes, 보다 normally takes an object, so you might expect 밴드를 보다.

But when 도 is used, it often replaces 을/를.

So:

• 밴드를 보다 = to see the band
• 밴드도 보다 = to see the band too

That is why 밴드도 is natural here. The object marker is not missing by mistake; 도 is doing that job instead.

-(으)ㄹ 겸 is a grammar pattern meaning something like:

• while also...
• as an excuse/opportunity to...
• with the additional purpose of...

So 밴드도 볼 겸 means:

• also as a chance to see the band
• partly to see the band too
• while I’m at it, to see the band too

The nuance is often that one action is done with another purpose in mind at the same time.

Because 겸 uses the form verb stem + -(으)ㄹ.

For 보다:

• dictionary form: 보다
• stem: 보-
• -(으)ㄹ added: 볼

So:

• 볼 겸 = with the intention of seeing / also to see

This -(으)ㄹ here is not plain future tense by itself; it is part of the grammar pattern -(으)ㄹ 겸.

공연장 means concert hall, performance venue, or concert venue.

The particle 에 here marks the destination:

• 공연장에 와 = come to the concert venue

With movement verbs like 가다 and 오다, 에 often shows where someone goes or comes.

일찍 is an adverb meaning early.

It describes the verb 와:

• 일찍 와 = come early

In Korean, adverbs like this usually come before the verb they modify.

와 is the casual, non-polite form of 오다 (to come).

So the sentence is in a plain/casual style. Depending on context, this can sound:

• conversational
• informal
• like diary/narration style
• like quoted speech or relaxed written style

The polite version would be 와요.

So:

• 와 = casual
• 와요 = polite

Formally, 와 is the present-tense casual form of 오다. But in Korean, the present form is often used for near-future events too, especially when the event is planned or expected.

So depending on context, 와 can mean:

• comes
• is coming
• will come

Korean often lets the context decide which English translation sounds best.