The 25th hour
10/2007 - U-cover Records
CDr - u-box25extra
tracklisting
1.hour 24 (01:00:00) 
Hour Twenty-four
10/2007 - U-cover Records
CDr - u-box24-24
tracklisting
1.hour 24 (01:00:00) 
Hour Twenty-two
10/2007 - U-cover Records
CDr - u-box24-22
tracklisting
1.hour 22 (01:00:00) 
Birth
09/2007 - U-cover Minidisc
3"CDr - u-cdm18
tracklisting
1.Birth (20:05) 
Selected Work From The 24hour Box Part two
09/2007 - U-cover Records
CD - U-COVER027
tracklisting
1.h15/02.36-12.46 (10:03) 2.h23/00.00-10.22 (10:01)
3.h19/27.44-38.26 (10:15) 4.h21/37.52-48.08 (9:09)
5.h13/23.33-34.15 (10:28) 6.h17/13.34-24.14 (10:18) 
Hour Twenty
09/2007 - U-cover Records
CDr - u-box24-20
tracklisting
1.hour 20 (01:00:00) 
Hour Eightteen
09/2007 - U-cover Records
CDr - u-box24-18
tracklisting
1.hour 18 (01:00:00) 
Hour Sixteen
08/2007 - U-cover Records
CDr - u-box24-16
tracklisting
1.hour 16 (01:00:00) 
Hour Fourteen
08/2007 - U-cover Records
CDr - u-box24-14
tracklisting
1.hour 14 (01:00:00) 
Red Planet Data
07/2007 - U-cover Minidisc
3"CDr - u-cdm14
tracklisting
1.Red Planet data (24:10) 
Hour Twelve
07/2007 - U-cover Records
CDr - u-box24-12
tracklisting
1.hour 12 (01:00:00) 
Hour Ten
07/2007 - U-cover Records
CDr - u-box24-10
tracklisting
1.hour 10 (01:00:00) 
Hour Eight
06/2007 - U-cover Records
CDr - u-box24-08
tracklisting
1.hour 08 (01:00:00) 
Hour Six
06/2007 - U-cover Records
CDr - u-box24-06
tracklisting
1.hour 06 (01:00:00) 
Hour Four
05/2007 - U-cover Records
CDr - u-box24-04
tracklisting
1.hour 04 (01:00:00) 
Hour Two
05/2007 - U-cover Records
CDr - u-box24-02
tracklisting
1.hour 02 (01:00:00) 
Selected Work From The 24hour Box Part One
05/2007 - U-cover Records
CD - U-COVER026
tracklisting
1.h11/38.35-48.45 (10:03) 2.h03/14.26-24.46(10:02)
3.h09/12.08-22.28. (10:12) 4.h05/08.01-18.21 (10:02)
5.h01/33.15-43.35 (10:13) 6.h07/30.49-41.09 (9:24) 
Blackout
05/2007 - U-cover Minidisc
3"CDr - U-CDM10
tracklisting
1.Nineoneone (17:59) 2.Blackout (6:41) 
Hour Twenty-three
04/2007 - U-cover Records
CDr - u-box24-23
tracklisting
1.hour 23 (01:00:00) 
Hour Twenty-one
04/2007 - U-cover Records
CDr - u-box24-21
tracklisting
1.hour 21 (01:00:00) 
Hour Nineteen
03/2007 - U-cover Records
CDr - u-box24-19
tracklisting
1.hour 19 (01:00:00) 
Hour Seventeen
03/2007 - U-cover Records
CDr - u-box24-17
tracklisting
1.hour 17 (01:00:00) 
Hour Fifthteen
02/2007 - U-cover Records
CDr - u-box24-15
tracklisting
1.hour 15 (01:00:00) 
Hour Thirdteen
02/2007 - U-cover Records
CDr - u-box24-13
tracklisting
1.hour 13 (01:00:00) 
Dead End
01/2007 - Silken Tofu
3"CDr - ST06
tracklisting
1.Dead End (22:46) 
Hour Eleven
01/2007 - U-cover Records
CDr - u-box24-11
tracklisting
1.hour 11 (01:00:00) 
Hour Nine
01/2007 - U-cover Records
CDr - u-box24-09
tracklisting
1.hour 9 (01:00:00) 
Dia De Los Muertos
01/2007 - U-cover Minidisc
3"CDr - U-CDM01
tracklisting
1.Dia De Los Muertos (20:35) 
Hour Seven
10/2006 - U-cover Records
CDr - u-box24-07
tracklisting
1.hour 7 (01:00:00) 
Hour Five
10/2006 - U-cover Records
CDr - u-box24-05
tracklisting
1.hour 5 (01:00:00) 
Hour Three
11/2006 - U-cover Records
CDr - u-box24-03
tracklisting
1.hour 3 (01:00:00) 
Hour One
11/2006 - U-cover Records
CDr - u-box24-01
tracklisting
1.hour 1 (01:00:00) 
Solar Terrestrial Activity
08/2006 - U-cover CDr Limited
CDr - u-cdr32
tracklisting
1.Solar 20060821 (14:04) 2.Solar 20060715 (9:43)
3.Solar 20060322 (9:15) 4.Solar 20060117 (9:46)
5.Solar 20051230 (10:29) 
Procesamiento Digital Dos
05/2006 - U-cover Transparente
CD - u-ct03
tracklisting
1.Procesamiento 2.01 (6:15) 2.Procesamiento 2.02 (6:15)
3.Procesamiento 2.03 (4:35) 4.Procesamiento 2.04 (4:00)
5.Procesamiento 2.05 (5:06) 6.Procesamiento 2.06 (4:13)
7.Procesamiento 2.07 (5:01) 8.Procesamiento 2.08 (4:07)
9.Procesamiento 2.09 (4:42) 10.Procesamiento 2.10 (5:18) 
Procesamiento Digital Uno
03/2006 - U-cover Transparente
CD - u-ct01
tracklisting
1.Procesamiento 1.01 (14:57) 2.Procesamiento 1.02 (14:01)
3.Procesamiento 1.03 (12:25) 4.Procesamiento 1.04 (8:42) 
The Long River Run 2
01/2007 - U-cover CDr Limited
CDr - u-cdr21
tracklisting
1.The Long River Run 2 (45:50) 
Magical Tone Tricks
11/2005 - Silentes
CD - SIL200508CD
tracklisting
1.Haunted (14:24) 2.Lost Memories (8:03)
3.Cruel Passion (16:43) 4.Sweet Man (16:38) 
16102004Stage
08/2005 - U-cover CDr Limited
CDr - u-cdr15
tracklisting
1.16102004Stage
Live At CCLuchtbal Antwerp, Belgium At 16 October 2004 (52:28) 
Ontayso meets Gizmo Cosmos meets Joel Tammik
Theme from planet Space
05/2005 - U-cover CDr Limited
CDr - u-cdr10
tracklisting
1.Gizmo's Drive (4:38) 2.Cool Cats Jazz (8:43)
3.Theme From Planet Space (8:10) 4.Landing Reverb (12:28)
5.St. Tropez Slowed (8:38) 
The Long River Run
10/2004 - U-cover Tour CDr
CDr - tour2004
tracklisting
1.The Long River Run (38:08) 
Ontayso / Sense / Tim Koch
Where have you been? What have you done? And why?
08/2004 - U-cover Records
CD - U-COVER020
tracklisting
1.Walk Your Way (7:34) 2.Absent (6:53) 3.Shore (5:32) 
Elochim
09/2003 - Tantra Harmonies
CD - TANTRA19
tracklisting
1.I Think I Fly (3:39) 2.Old Light (7:49) 3.Frozen (10:13)
4.Disintegration (9:26) 5.Nameless Planet (6:28) 6.Landed (10:54)
Elochim / Primer Momento
09/2003 - Tantra Harmonies
CD/CDr - TANTRA19X
tracklisting
Elochim
1-1.I Think I Fly (3:39) 1-2.Old Light (7:49)
1-3.Frozen (10:13) 1-4.Disintegration (9:26)
1-5.Nameless Planet (6:28) 1-6.Landed (10:54)
Primer Momento
2-1.Frontera Invisible (14:25) 2-2.Latente (11:12)
2-3.Cianuro (14:42))
Score Of An Imaginary Iceland
02/2003 - U-cover 40
CD - U-COVER40/01
tracklisting
1.Score Of An Imaginary Iceland (40:00)
REMIXES MADE BY ONTAYSO:
Remix for Remote_
07/2007 - U-cover CDr Limited
CDr - u-cdr44
tracklisting
2.Celestion II (30:28) 
Remix for Cooler
05/2007 - U-cover CDr Limited
CDr - u-cdr43
tracklisting
12.Blue-eyed Harp (Ontayso Mix) (11:43) 
Remix for Joel Tammik
05/2007 - U-cover Minidisc
3"CDr - u-cdm11
tracklisting
5.Eile (4:54) 
Remix for Forrest
03/2007 - U-cover CDr Limited
CDr - u-cdr39
tracklisting
6.Can You See? (Pray Mix) (6:01) 
Remix for Motoro Faam
10/2006 - U-cover Transparente
CD - u-ct05
tracklisting
10.Dancer On A Tangent (6:43) 
Remix for Knut
09/2006 - Hydra Head
CD - HH666 088
tracklisting
14.Reknutcut (4:30) 
Remix for Contagious Orgasm
10/2004 - Ant Zen
2CD - ACT171
tracklisting
2-11.When The Empire Which Shines Sink And Dies (7:26) 
Remix for Ten and Tracer
06/2004 - U-cover Records
CD - U-COVER019
tracklisting
14.Ten Minutes Of Shade (10:15)
Remix for Electric Birds
05/2002 - U-cover Records
CD - U-COVER011
tracklisting
1.Stem (Ontayso 'Things Start Where They End' Remix) (6:16)
REMIXES MADE FOR ONTAYSO:
Remix by Automotive
08/2006 - Couchblip
CD - BLIP010
tracklisting
7.Ontayso Theme (3:33) 
Re-mixed, Re-worked, Re-constructed and Re-invented Part Two
09/2004 - U-cover Records
CD - U-COVER021
tracklisting
1.Untitled (Pan American Remix) (6:31)
2.Untitled (Greg Davis Remix) (2:33)
3.Untitled (Multiplex Remix) (3:47)
4.Untitled (Tim Koch Remix) (3:10)
5.Untitled (Funckarma Remix) (5:19)
6.Untitled (Bauri Remix) (7:10)
7.Untitled (Abstract Knights Remix) (4:06)
8.Untitled (Arno Peeters Remix) (7:33)
9.Untitled (Ten And Tracer Remix) (4:43)
10.Untitled (Ultra Milkmaids Remix) (3:22)
11.Untitled (Break 3000 Remix) (7:32)
Re-mixed, Re-worked, Re-constructed and Re-invented Part One
12/2002 - U-cover Records
CD - U-COVER013
tracklisting
1.Untitled (Kettel Remix) (4:25)
2.Untitled (Cosmic Connection Remix) (4:45)
3.Untitled (Mambotur Remix) (5:14)
4.Untitled (Loess Remix) (7:02)
5.Untitled (Alejandra And Underwood Remix) (2:19)
6.Untitled (Sense Remix) (5:58)
7.Untitled (ADN Remix) (7:03)
8.Untitled (File 538 Remix) (6:53)
9.Untitled (Scanner Remix) (4:53) ner
10.Untitled (The Buddy System Remix) (6:06)
11.Untitled (DJ Godfather Remix) (3:54) )
Remix by Funckarma
11/2003 - Onrecords
12" - ON104
tracklisting
A1.Ontayso Score Of An Imaginary Iceland (Funckarma Remix) (5:22) 
Remix by Loess
09/2003 - None Responce
12" - NORE03
tracklisting
A1.Ontayso Cianuro (Loess Remix) (7:02)
ON COMPILATIONS:
U-cover mix 02 [dub]
06/2007 - U-cover Records
CDr - U-cdrmix02
tracklisting
03.h09/12.08-22.28 (10:10) 
U-cover mix 01 [ambient]
06/2007 - U-cover Records
CDr - U-cdrmix01
tracklisting
04.Solar 20060821 (6:14)
12.Cool cats jazz (14:04) 
Mind The Gap Volume 50
06/2004 - Gonzo Circus
2CD - GC056
tracklisting
2-01.Integration 2004 (4:16)