Gangnam jazz bar date: both live sets and chocolate cake, Flat Nine

In short

Flat Nine is a jazz bar and restaurant near Gangnam Station in Seocho, Seoul, where you can have a course dinner while watching live jazz. On a date, the writer ordered the Classic Course for 2, with Jeju black pork tenderloin steak and a rich chocolate cake, and stayed through both live sets of about 40 to 50 minutes each. The writer arrived expecting little and left hooked on jazz, which makes Flat Nine an easy first jazz bar even for complete beginners.

Dining while enjoying a performance at Flat Nine

Good to know

Getting there
Gangnam Station Exit 10 · 5-min walk (store listing, Oct 6, 2026)
What we ordered
Classic Course for 2 (main: Jeju black pork tenderloin steak; dessert: chocolate cake)
Live music
Two sets of about 40–50 minutes each (1st set → break → 2nd set); the lineup seems to change daily
Hours (Mon–Thu)
18:00–23:00, last order 22:30
Hours (Fri)
18:00–24:00, last order 22:30
Hours (Sat–Sun)
15:00–24:00, break 17:40–18:00, last order 22:30
Location
5th floor, 10 Gangnam-daero 65-gil, Seocho-gu, Seoul; near Gangnam Station (Line 2 and Shinbundang Line)

as written by the visitor on Jul 2, 2026

Overview of Flat Nine, a jazz bar near Gangnam Station

What kind of jazz bar is Flat Nine?

Flat Nine is a jazz bar near Gangnam Station where you can eat a course meal while watching live jazz. If you're looking for a special date or anniversary spot in Gangnam, I'd recommend Flat Nine for the atmosphere, the food and the music. With soft lighting and stylish interiors, plus live jazz, it felt like sitting in a concert hall the whole meal.

It isn't just a place to drink; it's a restaurant with course meals, so it suits dates, birthdays and anniversaries, days that mean a bit more. The music isn't too loud, so we could talk comfortably, and being able to enjoy a meal and a performance at the same time was a big plus.

Dining while enjoying a performance at Flat Nine

What we ordered at Flat Nine

We ordered the Classic Course for 2. From appetizer to dessert it was tastier than I expected, so I was happy haha

What is the live jazz at Flat Nine like?

The biggest draw of Flat Nine is, without question, the live jazz. The music under the soft lighting lifted the whole space, and it made for a relaxed mood where I could just focus on eating.

The interior is classy but not overwhelming, so it suits anniversary dates, but also get-togethers with friends or family!! Any time, any purpose. The lineup seemed to change from day to day.

Live jazz stage at Flat Nine

Honestly... I came without big expectations, but the singing was so good, and it really captured the jazz mood, that I fell for the charm of jazz before I knew it.

Jazz vocal performance at Flat Nine

Is Flat Nine good for a first jazz bar visit?

Even if you don't know much about jazz or it's your first time at a jazz bar, the mood at Flat Nine is easy to enjoy, so there was no pressure~!!! If you're curious about jazz bars, or want to enjoy jazz again after a long time, visit Flat Nine after work or on a weekend!! It will probably beat your expectations haha

First and second live sets at Flat Nine

How long are the live sets at Flat Nine?

The performance ran two sets of about 40 to 50 minutes each: 1st set → break → 2nd set. I never thought I'd stay to the end! LOL And it went longer and deeper than at other jazz bars, which I liked. It felt like I got my money's worth, haha

Flat Nine Classic Course: what's in it and how it tastes

This time we chose the Classic Course. Dishes came in order from the starter to dessert, so we could eat at a relaxed pace, and the whole course was well balanced, which I liked.

Starter from the Flat Nine Classic Course
A plate from the Flat Nine Classic Course

The course came one neat plate at a time, so the meal flowed naturally, and the plating was refined, so it was fun to enjoy with the eyes first haha

Plating of the Flat Nine Classic Course
Vertical photo of a Flat Nine course dish
Mid-course dish from the Flat Nine Classic Course

With every dish prepared so carefully, I felt like a guest being treated specially!

Table set with Flat Nine course dishes
Dish before the main in the Flat Nine Classic Course

Main course: Jeju black pork tenderloin steak

The dish that stood out in the Classic Course was, of course(?) haha, the main: the Jeju black pork tenderloin steak.

Jeju black pork tenderloin steak at Flat Nine

The texture was far more tender than ordinary pork, and the clean flavor and juiciness typical of tenderloin came through so well that every bite filled my mouth with flavor~ haha

Cross-section of black pork tenderloin steak cooked medium-rare

The outside was golden and nutty, and the inside stayed juicy at medium-rare, so the balance of textures was really great..!! It wasn't tough at all, and the tenderness made it easy to eat.

A bite of black pork tenderloin steak at Flat Nine
Vertical photo of the Flat Nine Classic Course main

Dessert: rich chocolate cake

And then the final dessert... a really, really rich chocolate cake. I don't usually like chocolate desserts, yet I scraped the plate clean, it was that good.

Rich chocolate cake dessert from the Flat Nine course

Are the Flat Nine course portions big enough?

I had the stereotype that course meals are small, but the Flat Nine Classic Course left me properly full by the end, which raised my satisfaction even more. Eating slowly while watching the jazz, time just flew by..!!

Meal at Flat Nine with a jazz performance

Inside and outside Flat Nine

Interior of Flat Nine
Vertical photo of Flat Nine inside and out
Hall seating and interior at Flat Nine
Softly lit interior of Flat Nine
Interior detail at Flat Nine
Entrance area of Flat Nine

Flat Nine opening hours and location near Gangnam Station

Flat Nine is at 10 Gangnam-daero 65-gil, Seocho-gu, Seoul (5th floor), near Gangnam Station on Subway Line 2 and the Shinbundang Line. Hours are below, and last order is 22:30 every day.

  • Mon-Thu 18:00-23:00 (last order 22:30)
  • Fri 18:00-24:00 (last order 22:30)
  • Sat-Sun 15:00-24:00 (break 17:40-18:00, last order 22:30)

Where it is

Flat Nine플랫나인

10 Gangnam-daero 65-gil, Seocho-gu, Seoul, South Korea (5th floor)서울특별시 서초구 강남대로65길 10 5층

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