| Official |
|---|
| 1.1 | Singularity (Brainchild II) (radio edit) | 3:47 | DJ Tandu presents Ayla | Singularity (Brainchild II) | DJ Tandu presents Ayla | Single | | Unsubmissive Records | 0109435UNS |
| 1.3 | Singularity (Brainchild II) (Tandu radio edit) | 3:47 | Ayla | Nirwana | Ayla | Album | | Unsubmissive Records | 0110392UNS |
| 1.9 | Singularity (Brainchild II) (radio edit) | 3:45 | DJ Tandu presents Ayla | Club Sounds: The Ultimate Club Dance Collection, Vol. 14 | Various Artists | Album + Compilation | | Dance Division | 498416-2 |
| 1.11 | Singularity (Brainchild II) (radio edit) | 3:45 | DJ Tandu pres. Ayla | Club Rotation, Volume 11 | Various Artists | Album + Compilation | | Warner Special Marketing | 8573-83804-2 |
| 2.13 | Singularity (Brainchild II) (radio edit) | 3:44 | DJ Tandu pres. Ayla | Future Trance 12 | Various Artists | Album + Compilation | | Polystar | 524 885-2, 524 886-2, 524 887-2 |
| 1.13 | Singularity (Brainchild 2) | 3:44 | Ayla | Definitive 100% Trance 2 | Various Artists | Album + Compilation | | | |
| 1.5 | Singularity (Brainchild II) (radio edit) | 3:43 | Ayla | Trance 2000 | Various Artists | Album + Compilation | | Edel Records | 007015-2ERE, 0113832ERE |
| 1.1 | Singularity (Brainchild II) (radio edit) | 3:44 | DJ Tandu presents Ayla | Singularity (Brainchild II) | DJ Tandu presents Ayla | Single | | NoYu Records | 010 |
| (unknown) |
|---|
| 1.9 | Singularity (Brainchild Ii) (radio edit) | 3:45 | DJ Tandu Presents Ayla | Club Sounds Vol.14 | Various Artists | Album + Compilation | | Dance Division | 498416-2 |
| 2.7 | Singularity (Brainchild II) (radio edit) | 3:44 | DJ Tandu Pres. Ayla | EinsLive Partyservice | Various Artists | Album + Compilation | | y3k1 | 0108932y3k |