| 1 | People | 3:30 |
| 2 | Socialize | 3:50 |
| 3 | Ride | 3:52 |
| 4 | Matter Of Time | 3:03 |
| 5 | No Interference | 5:58 |
| 6 | Bridge | 4:04 |
| 7 | Ahorake | 6:56 |
| 8 | Unión | 16:39 |
| 9 | Erizo | 2:30 |
| 10 | Pa' Ti Pa' Mi | 4:42 |
| 11 | Numbed | 3:10 |
| 12 | Si Aja | 5:40 |
| 13 | Semilla | 1:09 |
| Category | Artist | Title (Format) | Label | Category | Country | Year |
|---|---|---|---|---|---|---|
| 088 112 362-2 | Puya | Union (CD, Album) | MCA Records | 088 112 362-2 | US | 2001 |
| 112362-4, 00881123624 | Puya | Union (Cass, Album) | MCA Records, Universal Music Distribution | 112362-4, 00881123624 | Malaysia | 2001 |
| 112 362-4 | Puya | Union (Cass, Album) | MCA Records | 112 362-4 | Thailand | 2001 |
| 17956 | Puya | Union (CDr, Promo) | MCA Records, GKS Entertainment | 17956 | US | 2001 |
| MCAF-25169-2, 088 112 362-2/4 | Puya | Union (CD, Advance, Album, Promo) | MCA Records, MCA Records | MCAF-25169-2, 088 112 362-2/4 | US | 2001 |
Made in the EU. [On CD]
Made in Germany. [in the Matrix]