Appears on releases
| # | Title | Length | Track artist | Release title | Release artist | Release group type | Country/Date | Label | Catalog# |
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 1.1 | Intro | 3:09 | t.A.T.u. | Happy Smiles | t.A.T.u. | Album |
| T.A. Music (T.A.T.U. group label) | |
| 1.1 | Intro | 3:09 | t.A.T.u. | Happy Smiles | t.A.T.u. | Album |
| T.A. Music (T.A.T.U. group label) | |
| 1.1 | Intro | 3:09 | t.A.T.u. | Весёлые улыбки | t.A.T.u. | Album |
| Союз | UL 085787 |
| Bootleg | |||||||||
| 1.1 | Intro | 3:10 | t.A.T.u. | Веселые улыбки | t.A.T.u. | Album + Compilation | |||
| Pseudo-Release | |||||||||
| 1.1 | Intro | 3:09 | t.A.T.u. | Vesyolye ulybki | t.A.T.u. | Album |
| T.A. Music (T.A.T.U. group label) | UL 085787 |
| (unknown) | |||||||||
| 1.1 | Intro | 3:09 | t.A.T.u. | Happy Smiles | t.A.T.u. | Album |
| ||
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