Recursive function

リカーシブ・ファンクション

Song Information

リカーシブ・ファンクション's jacket.

Artist: OSTER project
Composition/Arrangement: OSTER project
Guitars: 96-chan
BPM: 145
Length: 1:49
Jacket design: XTC
First Music Game Appearance: REFLEC BEAT groovin'!!
Other Music Game Appearances:

• jubeat (2021)
• jubeat festo
• REFLEC BEAT plus MUSIC PACK 66
• SOUND VOLTEX III GRAVITY WARS

Lyrics

None.

Song Connections / Remixes

None.

Trivia

• リカーシブ・ファンクション is one of the Refle unlockable songs in REFLEC BEAT groovin'!!. It could be purchased from the Reflec Shop from July 8th, 2014 for 1200 Refle.
  • In REFLEC BEAT VOLZZA and REFLEC BEAT VOLZZA 2, it was playable by default.
• リカーシブ・ファンクション marks OSTER project's first original song in the REFLEC BEAT series.
• A recursive function, in computer science or mathematics, refers to a function or procedure that "calls upon itself" repeatedly in order to solve a complicated problem, by breaking it down to similar but simpler problems.
• リカーシブ・ファンクション's jacket is made of fractal art, specifically dragon curve. According to OSTER project, she requested this to match the mathematical motif of the song.
• リカーシブ・ファンクション could be unlocked in SOUND VOLTEX III GRAVITY WARS from August 6th, 2015 as part of the BEMANI SUMMER DIARY 2015 event.
• After being removed from the initial release of REFLEC BEAT 悠久のリフレシア, リカーシブ・ファンクション was revived on February 23rd, 2017.
• リカーシブ・ファンクション was added to jubeat (2021) on March 30th, 2022.
• リカーシブ・ファンクション could be unlocked in jubeat festo from June 22nd to July 12th, 2022 as part of the Stamp Challenge unlocking system, by obtaining 13 stamps.
  • In jubeat Ave., it could be unlocked in STAR RECORD from February 8th to 28th, 2023, by lighting up 8 stars.

Song Production Information

None.

Difficulty & Notecounts

jubeat difficulty rated from 1 to 10.9 from festo onwards.
REFLEC BEAT to groovin'!! Upper difficulty rated from 1 to 10+, 1 to 13 in VOLZZA/VOLZZA 2, and 1 to 15 in 悠久のリフレシア.
SOUND VOLTEX BOOTH to III GRAVITY WARS difficulty rated from 1 to 16, and 1 to 20 from IV HEAVENLY HAVEN onwards. (Ratings and notecounts obtained from REFLEC BEAT @wiki and SOUND VOLTEX @ wiki.)

jubeat

Game	Level
	Basic	Advanced	Extreme
Notecounts	233	377	610
jubeat (2021)	4	7	9.5
jubeat festo→Present	4	7	9.5

REFLEC BEAT

Old Charts

Game	Level
	Basic	Medium	Hard	Special
Notecounts	223	371	637	-
REFLEC BEAT groovin'!!→VOLZZA 2	5	8	10	-
REFLEC BEAT plus	5	8	10	-

New Charts

Game	Level
	Basic	Medium	Hard	White Hard
Notecounts	259	415	700	1029
REFLEC BEAT 悠久のリフレシア	7	10	12	15

SOUND VOLTEX

Game	Level
	NOVICE	ADVANCED	EXHAUST	MAXIMUM	EXCEED
Max Chain	381	796	1214	-	-
Effected By	ま☆	ま☆	ま☆	-	-
Jacket Artists	XTC	XTC	XTC	-	-
SOUND VOLTEX III	5	11	14	-	-
SOUND VOLTEX IV→Present	5	11	↑15	-	-
SOUND VOLTEX III コナステ	5	11	15	-	-
SOUND VOLTEX EXCEED GEAR コナステ	5	11	15	-	-