Some details about which known tunes the composers worked on:
skankfunk (Hideki Naganuma)
MONKEY SELECTOR
FREAK 2NITE (World - Space Factory)
MAMA FROG (World - Mystic Dome)
SOLIDNESS (Race - Mt. Tyrano, unused track from Kurohyo: Ryu ga Gotoku Shinsho)
ROCKIN' COMMANDER (Fight - Blue Harbor)
PALTY PALTY (unused, trailer theme)
VENDOR POP (unused, later used in YAKUZA 5)
DANCE EXCLUSIVE MEDLEY (unused)
Source: SOUNDCLOUD (now all removed)
Keiichi Sugiyama
Title
Ending
Source:
https://twitter.com/fiberjelly/statu...92394577948672
karuta
World - Sweet Fountain
Source:
http://karuta.air-nifty.com/about.html
YOSHITSURU (Yoshio Tsuru)
ZANNEN
Reason: Reused composition from YAKUZA 4 ("Funny")
Daniel Lindholm
World - Monkey Island (unused)
World - Aladdin's Castle (possibly unused)
World - Dragon's Journey (possibly unused)
Sources:
https://twitter.com/dropkickmonk3y/s...77230404952065 https://twitter.com/dropkickmonk3y/s...77020238872577
Chiho Kobayashi
Bonus!
Reason: Reused composition from SUPER MONKEY BALL: Touch & Roll
Maybe others? Odd for her to be credited here and not the other games this tune is rearranged in.
And a less conclusive one:
Yosuke Hatakeyama
World - Aladdin's Castle
"Battle Song"
Reason: Mentioned on SoundOnline's website, but only as a selling point, no confirmation of composition.
http://web.archive.org/web/201910301...blog/?m=201103