Tracklist
| 1 | –Future Signal | World Of Sound | 6:57 |
| 2 | –Proktah | What Is It | 5:06 |
Other versions
| Category | Artist | Title (Format) | Label | Category | Country | Year |
|---|---|---|---|---|---|---|
| FKZLTD 024 | Future Signal / Proktah | Future Signal / Proktah - World Of Sound / What Is It (12") | Fokuz Limited | FKZLTD 024 | Netherlands | 2011 |
| FKZLTD024 | Future Signal / Proktah | Future Signal / Proktah - World Of Sound / What Is It (2xFile, MP3, 320) | Fokuz Limited | FKZLTD024 | Netherlands | 2011 |
