Tracklist
| Acto I - Opera Dulce | |
| A1 | Precimiento |
| A2 | Nacimiento |
| A3 | Cancion De Cuna |
| A4 | Crecimiento |
| A5 | ¡Es Alumno! |
| A6 | Compañero De Banco |
| A7 | Un Largo Tiempo |
| A8 | ¡Alguien Llega! |
| Acto II - Opera Amarga | |
| B1 | La Angustia |
| B2 | El Te Ayudara |
| B3 | ¿Forma O Esencia? |
| B4 | La Teoria Positiva |
| B5 | ¡Soy Tu Vida! |
| B6 | Reflexion |
| B7 | Luz En La Vida |
| B8 | Conclusion |
Credits
- Art Direction – Jorge Servici
- Bass, Vocals – Omar Constanzo
- Design [Cover] – Rodolfo Campodonico
- Drums, Percussion, Arranged By – Carlos Riganti
- Engineer – Carlos García , Carlos López*
- Lead Guitar, Vocals, Arranged By – Edgardo Rapetti
- Lyrics By – Omar Eduardo Contanzo*
- Music By – Julio Alberto Presas*
- Photography By – Jorge Galata
- Piano – Litto Nebbia
- Producer – Enrique Londaits
- Rhythm Guitar, Vocals – Julio A. Presas*
Notes
Released in a gatefold cover.Other versions
| Category | Artist | Title (Format) | Label | Category | Country | Year |
|---|---|---|---|---|---|---|
| 64011 | Materia Gris | Ohperra Vida De Beto (LP, Album) | Harvest | 64011 | Argentina | 1972 |
| 2000 | Materia Gris | Ohperra Vida De Beto (CD, Album, RE, Unofficial) | Mardel-X | 2000 | Argentina | 2005 |
| 968 | Materia Gris | Ohperra Vida De Beto (CD, Album, RE, RM) | Fonocal | 968 | Argentina | 2014 |
| MRD-2000 | Materia Gris | Ohperra Vida De Beto (CD, Album, RE, Unofficial) | Mardel-X | MRD-2000 | Argentina | 1998 |
| TT001 | Materia Gris | Ohperra Vida De Beto (LP, Album, RP) | Marcoumar | TT001 | Argentina | 1995 |
