As for live TV performances, she has sung:
Shiroi Koibitotachi with Chemistry (02-12-23 - Hey! Hey! Hey! Xmas Special)
Silent Night with Gackt (01-12-24 - Yume no Xmas Special)
Seasons + Surreal + Far Away + Vogue + Fly High + Whatever with SMAP (during one of their shows in Autumn 2000).
And listed below are the songs she sang in duet with other artists on her Ayuready? show. Info was compiled mostly by nmskalmn for the
Ayuready databank post:
Episode 01
LOVE ~since 1999~
performed by Ayumi Hamasaki & Tsunku
Episode 02
if...
performed by Ayumi Hamasaki & DA PUMP
Episode 03
ikiteru kototte subarashii
performed by Ayumi Hamasaki & Kuzu
Episode 04
samui yoru dakara...
CRAZY GONNA CRAZY
Overnight Sensation ~jidai wa anata ni yudaneteru~
performed by Ayumi Hamasaki & TRF
Episode 05
Your eyes only - aimai na boku no rinkaku
performed by Ayumi Hamasaki & EXILE
Episode 06
furui nikki
performed by Ayumi Hamasaki & Akiko Wada
Episode 07
saudade
ageha cho
performed by Ayumi Hamasaki & PornoGraffitti
Episode 08
TRUE LOVE
performed by Ayumi Hamasaki & Fumiya Fujii
Episode 09
DESIRE ~jounetsu~
shoujo A
performed by Ayumi Hamasaki & Akina Nakamori
Episode 10
Dear My Friend
YOU
performed by Ayumi Hamasaki & Every Little Thing
Episode 11
White Christmas
Dearest
performed by Ayumi Hamasaki & Kyoko Fukada
Episode 14
nagai aida
performed by Ayumi Hamasaki & Kiroro
Episode 15
kimi ga irudakede
roman hikou
performed by Ayumi Hamasaki & Tatsuya Ishii
Episode 16
amairo no kami no otome
PAPILLON
performed by Ayumi Hamasaki & Hitomi Shimatani
Episode 17
A HAPPY DAY
SONS OF THE SUN
performed by Ayumi Hamasaki & mach25
Episode 18
agayaki nagara
performed by Ayumi Hamasaki & Hideaki Tokunaga
Episode 19
kowarekake no Radio
performed by Ayumi Hamasaki & Hideaki Tokunaga
Episode 20
ashita, haru ga kitara
ashita ni kuchizuke wo
performed by Ayumi Hamasaki & Takako Matsu
Episode 21
sasoriza no onna
performed by Ayumi Hamasaki & Kenichi Mikawa
kiyoshi no zundoko bushi
performed by Ayumi Hamasaki & Kiyoshi Hikawa
Episode 22
kyoretsu romance
performed by Ayumi Hamasaki & Mitsuhiro Oikawa
Episode 23
uwasa no SEXY GUY
Who...
performed by Ayumi Hamasaki & Maki Goto
Episode 24
M (by PRINCESS PRINCESS)
performed by Ayumi Hamasaki & Masami Hisamoto
Episode 26
CHANGE THE WORLD
performed by Ayumi Hamasaki & Kohichi Iwaki
Episode 27
Rock 'n' Roll kenchou shozaichi ~oboechaina series~
performed by Ayumi Hamasaki & Minimoni
Episode 28
Masquerade
performed by Ayumi Hamasaki & Kiyoharu
Episode 30
curry rice no onna
performed by Ayumi Hamasaki & Sonim
Episode 33
okuru kotoba
performed by Ayumi Hamasaki & Tetsuya Takeda
Episode 34
Can't take my eyes off of you
performed by Ayumi Hamasaki & Mika Kano
Episode 40
[Unknown song]
performed by Ayumi Hamasaki & Matsu Takako
Episode 42
LA LA LA
performed by Ayumi Hamasaki & Maki Ohguro
Episode 49
I Love Dream World
performed by Ayumi Hamasaki & dream
Episode 50
kawaii ano musume
performed by Ayumi Hamasaki & Shunsuke Nakamura, Yoshinori Okada, Takashi Tsukamoto
Episode 52
olivia wo kikinagara
performed by Ayumi Hamasaki & ANRI
Episode 53
chiba-ken
performed by Ayumi Hamasaki & Hanawa
Episode 54
anna
performed by Ayumi Hamasaki & Yoshihiro Kai
Episode 57 (?)
koihitoyo
arasi no sugao
performed by Ayumi Hamasaki & Shizuka Kudo
Episode 58
SUPER LOVER ~I need you tonight~
performed by Ayumi Hamasaki & w-inds.
Episode 68
lonely chaplin
performed by Ayumi Hamasaki & Masayuki Suzuki
Episode 70
kore ga watashi no ikiru michi
performed by Ayumi Hamasaki & PUFFY