sources:
UYMP catalogue (pdf)
scores
The art of being ambiguous: from listening to composing (CMR)
An Introduction to Jo Kondo’s Sen no Ongaku Music of 1973 to 1980
November 2011 interview
Jo Kondo et John Cage
Tokyo Concerts page
usenet discussion
The Ashgate Research Companion to Japanese Music

pieces:

Air I (1971)
play
LP

Falling (1973)
Apple
LP

Click Crack (1973)
play
LP

Wait (1973)
CD

Standing (1973)
YouTube SoundCloud SoundCloud Apple play
LP

Mr. Bloomfield, His Spacing (1973)
play comment
CD CD

Pass (1974)
play
LP

Sight Rhythmics (1975)
YouTube
LP

Under the Umbrella (1976)
Spotify

Walk (1976)
YouTube YouTube YouTube

Knots (1977)
play
LP

An Elder’s Hocket (1979)
Apple

When Wind Blew (1979)
Apple

Threadbare Unlimited (1979)
play
CD

A Shape of Time (1980)
LP

Strands II (1980)
Apple

An Insular Style (1980)
SoundCloud

Left Bank (1981)
CD

Still Life (1981)
play

Strands III (1981)
comment Apple

Duo (1982)
play
CD

Trio (Moor) (1982)
Apple

Diptych (1983)
CD

Dance(s) (1984/86)
Apple

Hunisuccle (1984)
play
CD

Tango mnemonic (1984)

Theatre (1985)
CD

Bonjin (1985)
SoundCloud Apple
CD

Isthmus (1985)
YouTube
CD

Words (1986)
play

The Serotinous (1986)
Apple
CD

Res sonorae (1987)
Apple
CD

Beginning, Middle And End (1987)
Apple

Ars brevis (1988)
Apple
CD

Vox humana (1988)
Apple

In the Woods (1989)
Spotify
CD

Hypsotony (1989)
play comment Apple

Fern (1990)
comment Apple Apple

Yokohama (1990)
Apple
CD

Aquarelle (1990)

Pendulums (1990)

A Dance for Piano, ʹEuropeansʹ (1990)
Spotify Apple

Serenata secca con obbligato (1991)
CD

Eight Categories (1991)
CD

Aesculus (1992)
Apple

In Early Spring (1993)
Apple

Petteia (1993)
Apple

Dots And Lines (1993)
Apple

Near And Far(1993)
Apple
CD

Orient Orientation (1973)
YouTube Apple
LP

Hagoromo (1994)
YouTube YouTube YouTube YouTube YouTube

Pergola (1994)
play Apple

Winsen Dance Step (1995)
YouTube YouTube
http://classical-music-online.net/en/production/13101
Apple

To the Headland (1995)
CD

Durante lʹinverno (1995)
CD

Three Songs of the Elderberry Tree (1995)
play Apple

Dithyramb (1996)
play
Apple

High Window (1996)
YouTube

A Prospect of the Sky (1997)
Apple

Gardenia (1997)
Apple play

Nocturnal (1997)

Mulberry (1998)
Spotify YouTube

Novitas mundi (1998)

Short Summer Dance (1998)

Pillars of Time (1999)
Apple

Contour Lines (1999)
Apple

Dartington Air (2000)

Calamintha (2000)
YouTube

Terracina (2001)
Apple

Metaphonesis (2001)
Apple

In Medias Res (2002)
Apple

Twayn (2002)
Apple

Ilex (2003)

In Summer (2004)
Spotify YouTube

Yarrow (2005)

Oneiric Prosody (2007)
comment

Holzwege (2008)

Surface, Depth and Colour (2009)
YouTube

The Shadow of a Shade (2010)

Paregmenon (2011)
comment

Antiphon (2012)
comment