Tracklist
| A | Somos Dos |
| B | Marco |
Other versions
| Category | Artist | Title (Format) | Label | Category | Country | Year |
|---|---|---|---|---|---|---|
| 60 29 383 | José María Pascual | Marco (De Los Apeninos A Los Andes) (7", Single) | Philips | 60 29 383 | Spain | 1976 |
| SP 26 001 | Luís Pedro Fonseca | Marco (Dos Apeninos Aos Andes) (7", Single) | Movieplay | SP 26 001 | Portugal | 1976 |
| F-ZET 0750006.2 | José María Pascual | Marco (De Los Apeninos A Los Andes) (7", Single) | Zeta | F-ZET 0750006.2 | Peru | 1979 |
| PB-7604 | José María Pascual | Marco (De Los Apeninos A Los Andes) (7", Single) | RCA Victor | PB-7604 | Spain | 1977 |
| PB - 7604 | José María Pascual | Marco - Dos Apeninos Aos Andes (7", Single) | RCA Victor | PB - 7604 | Portugal | 1977 |
