Who composed ニルヴの心臓 (Heart of Nirv)?

The track was composed by TJ.hangneil and Atomic Sphere, with vocals performed by Annabel.

When was ニルヴの心臓 added to maimai DX?

It was added on September 18, 2025, as part of the maimai DX CiRCLE version update.

What BMS event did ニルヴの心臓 win?

It won the individual score category at BOF:TT (BMS of Fighters: TT), a major BMS composition competition held in 2024.

Who designed the Master chart for ニルヴの心臓 in maimai DX?

The Master chart (level 14, constant 14.3) was designed by サファ太. The Expert chart (level 12+, constant 12.7) was designed by Luxizhel.

What is the BPM of ニルヴの心臓?

The song has a BPM of 256, placing it among the faster tracks in the maimai DX library.

What in-game title can be unlocked for ニルヴの心臓?

Earning an SSS rank on the Master chart unlocks the title 'IVORY/TOWER', which was upgraded from a silver-tier to a gold-tier title in CiRCLE PLUS.

Who created the jacket art and video for ニルヴの心臓?

The jacket illustration was created by MON, and the music video was produced by みやざわえそら.

ニルヴの心臓 (Heart of Nirv), BOF:TT Winning Song in maimai DX CiRCLE

All songs

Overview

ニルヴの心臓 (Heart of Nirv) is a high-energy BMS (Be-Music Source) track that won the individual score category at the 2024 BMS event BOF:TT (BMS of Fighters: TT). Brought to maimai DX as part of the CiRCLE version update on September 18, 2025, it represents a direct pipeline from the competitive BMS composition scene into SEGA's arcade rhythm game ecosystem. The track is a collaboration between TJ.hangneil, a veteran BMS circle known for technical, speed-oriented compositions, and Atomic Sphere, with vocals provided by Annabel, a vocalist whose credits span the doujin music and rhythm-game worlds. At 256 BPM, the song leans into relentless velocity, with layered synth leads, breakneck percussion, and Annabel's melodic vocals cutting through a dense production. The jacket artwork was handled by MON, and the music video (originally produced for the BOF:TT submission) was directed by みやざわえそら. In maimai DX, the song features four charts: a Basic and Advanced aimed at intermediate players, a demanding Expert chart (level 12.7) designed by Luxizhel, and a Master chart (level 14.3) designed by サファ太, both of which translate the original composition's speed and complexity into dense note patterns across the full DX panel.

Videos

Official PV

Open

Master chart

Open

Expert chart

Open

Charts

DX

BASIC

6(6)

311 notesDesigner: -|Tap 278Hold 8Slide 12Touch 9Break 4

YouTube

ADVANCED

8(8)

394 notesDesigner: -|Tap 340Hold 15Slide 8Touch 28Break 3

YouTube

EXPERT

12+(12.7)

673 notesDesigner: Luxizhel|Tap 506Hold 97Slide 18Touch 43Break 9

YouTube

MASTER

14(14.3)

880 notesDesigner: サファ太|Tap 585Hold 111Slide 72Touch 33Break 79

YouTube

Trivia

ニルヴの心臓 was the individual-score winner of BOF:TT (BMS of Fighters: TT), a major annual BMS composition competition held in 2024. This marks one of the highest-profile BMS event victories to be subsequently ported into maimai.
The BPM of 256 places this among the faster tracks in the maimai DX library, contributing to the challenge of its upper-difficulty charts.
Annabel, the vocalist featured on this track, is a well-known figure in the doujin and rhythm-game vocal scene, having contributed to songs across multiple BMS events, Touhou arranges, and commercial rhythm games.
TJ.hangneil is a composer alias active in the BMS scene, known for high-speed, technically intricate compositions that frequently appear in competitive BMS events.
The Master chart (level 14.3) was designed by サファ太 (Safata), while the Expert chart (level 12.7) was designed by Luxizhel, both are established notes designers in the maimai DX series.
The jacket illustration was created by MON, and the song's music video / BOF:TT submission visuals were produced by みやざわえそら.
Clearing the Master chart with SSS rank unlocks the in-game title 'IVORY/TOWER', which was promoted from a silver-tier to a gold-tier title in CiRCLE PLUS.
The song originated from the BMS (Be-Music Source) format, a community-driven music game ecosystem where composers submit original tracks for competitive events like BOF.
Despite being added in the CiRCLE version, the song was flagged as 'New: No' and 'Locked: No' in the truth data, indicating it was available from the start of the version without special unlock requirements.

FAQ

Who composed ニルヴの心臓 (Heart of Nirv)?: The track was composed by TJ.hangneil and Atomic Sphere, with vocals performed by Annabel.
When was ニルヴの心臓 added to maimai DX?: It was added on September 18, 2025, as part of the maimai DX CiRCLE version update.
What BMS event did ニルヴの心臓 win?: It won the individual score category at BOF:TT (BMS of Fighters: TT), a major BMS composition competition held in 2024.
Who designed the Master chart for ニルヴの心臓 in maimai DX?: The Master chart (level 14, constant 14.3) was designed by サファ太. The Expert chart (level 12+, constant 12.7) was designed by Luxizhel.
What is the BPM of ニルヴの心臓?: The song has a BPM of 256, placing it among the faster tracks in the maimai DX library.
What in-game title can be unlocked for ニルヴの心臓?: Earning an SSS rank on the Master chart unlocks the title 'IVORY/TOWER', which was upgraded from a silver-tier to a gold-tier title in CiRCLE PLUS.
Who created the jacket art and video for ニルヴの心臓?: The jacket illustration was created by MON, and the music video was produced by みやざわえそら.