UNDERTALE’s Determination Symphony Lands in KL This September

UNDERTALE’s Determination Symphony lands at Kuala Lumpur’s Plenary Hall on September 28, 2026, with a 25-piece orchestra performing the 2015 indie RPG’s score live for the first time in Malaysia. The Monday night show, presented by Singapore Street Festival Limited, is part of a four-continent world tour announced in March 2026 and curated personally by UNDERTALE creator Toby Fox. Early bird tickets are open now from RM150.

The stop is one of two confirmed Asia dates on the tour, alongside Singapore on September 22, 2026. The full performance runs around two hours, including a 20-minute interval, and the concert is conducted in English.

A Live Walkthrough of the Underground

The show is built as a guided journey through UNDERTALE’s story, not a traditional orchestral performance. A 25-piece orchestra sits below a large screen, and the game plays above the musicians as they play. The result is a live concert that doubles as a guided tour of the Underground, the monster-filled world at the centre of Toby Fox’s 2015 role-playing game. The format is designed to be accessible to fans who have never picked up the controller.

The concert walks the audience through five areas of the game in order, and each area gets its own music played live as the corresponding gameplay footage rolls on the screen above. The programme is built to cover both the quieter emotional moments and the more intense battle themes that made the game’s soundtrack widely recognised. The full show, as described on the official UNDERTALE Symphony site, aims to bring the game’s iconic characters, battles, and emotional moments vividly to life through music.

The concert programme follows five areas in sequence:

1. The Ruins, where the player character’s journey begins
2. Snowdin, the snow-covered town with its own themes
3. Waterfall, the area leading toward the game’s midpoint
4. Hotland, the lava-filled stretch and home to the game’s most intense battle themes
5. New Home, the final area, bringing the concert to its close

Curating the programme is the game’s original composer, Toby Fox, and his involvement shapes which tracks make the cut. That curation runs through the production, not as a marketing credit.

Toby Fox, the Composer Behind the Curtain

UNDERTALE: The Determination Symphony is curated personally by Toby Fox, the composer who wrote the game’s original score largely on his own. Fox is not conducting, but his selection of tracks and his involvement in the new arrangements are positioned as the centre of the production. The concert was developed by Lambert Jackson Productions with Materia Music, the independent game-music label, for the 10th anniversary of UNDERTALE’s 2015 release. It is now updated with additional scoring for the world tour, and Fox’s quote on the official site makes the case for the orchestral treatment directly.

UNDERTALE IS A GAME WITH A LOT OF MUSIC, IT’S GOOD WHEN SKILLED PROFESSIONALS PLAY THE MUSIC AND PEOPLE LISTEN TO IT.

Toby Fox, creator and composer of UNDERTALE, shared the quote in materials accompanying the tour announcement. The 2026/27 world tour is produced by SOHO Live, the Tokyo-based live music company that has built a global business around video game and anime concert tours. Materia Music is the co-developer with Lambert Jackson, and Adam Hoskins wrote the new arrangements.

Kuala Lumpur’s September 28 Date

The Kuala Lumpur date is Monday, September 28, 2026, with an 8 PM start at the Plenary Hall inside the Kuala Lumpur Convention Centre. The performance runs around two hours, including a 20-minute interval, and is conducted in English. Ticket prices range from RM150 to RM380, depending on seating, with both standard and restricted view options available. The KL stop is one of two confirmed Asia dates on the world tour, alongside Singapore on September 22, 2026.

The local stop is presented by Singapore Street Festival Limited, a Singapore-based promoter. Early bird tickets opened on June 12, 2026 and they’re open through July 5, 2026, with general sales starting July 6, 2026. As of mid-June, the early bird window is open.

As listed on the Asia tour page, Kuala Lumpur is scheduled for September 28, 2026, with tickets on sale. The KL stop sits inside a wider Asian circuit that began with Singapore on September 22, 2026, and KL follows six days later. Other Asia dates, including Shanghai, Kaohsiung, and Bangkok, remain listed as TBA on the tour’s official materials, and fans in the region will have at least the Singapore and KL dates to choose from before the rest of the Asian leg is announced.

From a Solo RPG to Four Continents

UNDERTALE was built largely by one person. Toby Fox developed and composed the original game in 2015 as a small, self-published role-playing title, and its soundtrack leaned on chiptune and minimalist textures that could be performed by a single musician at a keyboard. The 10th anniversary of that release is now being marked by a full symphonic ensemble on a tour that crosses four continents, beginning in San Jose, California on August 23, 2026 and reaching Kuala Lumpur on September 28.

According to the March 2026 SOHO Live tour announcement, the tour will cross North America, Europe, the UK, Asia, and Australia between August and December 2026. The scale of the production is the point of the tour, not a departure from the source material. New arrangements by Adam Hoskins, originally created for the 10th anniversary and now expanded with additional scoring for the world tour, give the game’s quieter moments room to breathe and its battle themes the full weight of a symphonic ensemble. The orchestral format extends the original tracks, which were written as short repeating loops, into extended pieces with string sections carrying the emotional themes and brass handling the battle music. Fox’s quote on the official site frames it as the same music, played by trained professionals.

The Asia leg of the tour has grown since the March announcement. The original SOHO Live release listed Singapore as the only confirmed Asia date, and by June the Asia tour page had added Kuala Lumpur, with Shanghai, Kaohsiung, and Bangkok still to be confirmed. The full global schedule, as announced, runs from August 2026 through December 2026, and the tour is the first international concert tour dedicated to UNDERTALE’s score. Previous UNDERTALE performances have been local and occasional, and this production is the score’s first sustained, multi-continent run.

How a 25-Piece Orchestra Treats the Score

The orchestral format is the production’s defining choice. Most UNDERTALE tracks were originally written as short, repeating loops suited to a small indie production, and a full orchestral arrangement turns those loops into extended pieces, with string sections carrying the game’s emotional themes and brass handling its battle music.

Adam Hoskins wrote the new arrangements, first for the 10th anniversary concert and now updated with additional scoring for the world tour. The concert’s programme is structured to capture both the quieter emotional moments and the more intense battle themes that made the game’s soundtrack widely recognised. Each game area gets its own musical treatment, with the corresponding gameplay footage playing above the stage in real time. The orchestra is the centrepiece, and the game is the visual guide.

Cosplay is encouraged, and exclusive new merchandise will be available at the concert venue. The tour’s official materials frame the show as a global celebration of the game’s music, and fans attending the KL show are encouraged to dress in UNDERTALE cosplay. Exclusive merchandise will be available at the Plenary Hall on the night.

Singapore Street Festival and the Asian Circuit

The KL stop is presented locally by Singapore Street Festival Limited, a Singapore-based promoter that has been building a regional pipeline of game and anime music concerts. The company is a natural fit for the KL date given the tour’s Singapore stop on September 22, 2026, six days before the Malaysian show. The Singapore-to-KL back-to-back is the only confirmed double in Asia so far, and the other Asia dates (Shanghai, Kaohsiung, and Bangkok) remain listed as TBA on the tour’s official materials as of mid-June 2026.

Singapore and Kuala Lumpur are the only two confirmed stops, with the rest still to be announced. Details on the remaining Asia dates are promised on the official UNDERTALE Symphony site, and fans in the region who want to catch the show before year’s end will have at least the Singapore and KL dates to choose from. The KL stop is the second confirmed Asia date, and the Singapore-to-KL back-to-back is the only confirmed double in the region so far.

Frequently Asked Questions

When and where is the UNDERTALE concert in Kuala Lumpur?

The show is on Monday, September 28, 2026, at 8 PM at the Plenary Hall inside the Kuala Lumpur Convention Centre. The performance runs around two hours including a 20-minute interval and is conducted in English.

How much are tickets, and when do they go on sale?

Tickets range from RM150 to RM380 depending on seating category, with both standard and restricted view options. Early bird sales opened on June 12, 2026 and run through July 5, 2026. General sales begin July 6, 2026.

What music will the orchestra perform?

The 25-piece orchestra performs newly arranged versions of Toby Fox’s UNDERTALE score, walking through five game areas in sequence: the Ruins, Snowdin, Waterfall, Hotland, and New Home. Gameplay footage from the corresponding areas is projected on a screen above the stage.

Who is behind the production?

The arrangements are by Adam Hoskins, originally created for UNDERTALE’s 10th anniversary and expanded for the world tour. The concert is curated by Toby Fox and produced by SOHO Live, the Tokyo-based company, with Lambert Jackson Productions and Materia Music.

Can fans attend in cosplay?

Yes. The tour encourages fans to attend in UNDERTALE cosplay, and exclusive new merchandise will be available for purchase at the Plenary Hall on the night.