Materia Gris -

Materia Gris was an Argentine psych-rock band that issued a concept album on Harvest in 1972. The band included future Pescado Rabioso/La Máquina de Hacer Pájaros keyboardist Carlos Cutaia and eventual Alas drummer Carlos Riganti.

Members: Julio Presas (guitar, bass, percussion, vocals), Eduardo Rapetti (guitar, vocals), Omar Constanzo (bass, vocals), Carlos Cutaia (keyboards), Carlos Riganti (drums, percussion)

Background

Materia Gris formed in Argentina in 1970 with Julio Presas and Eduardo Rapetti on guitars, Omar Constanzo on bass, and Carlos Riganti on drums. The group began with a psych-pop direction shaped by Beatles-era templates, then issued a single on the Music Hall label. That release marked the pivot toward a harder, more driving approach, which set the frame for the band’s first full-length statement.

Ohperra vida de Beto

Materia Gris released their singular album, Ohperra vida de Beto, in September 1972 on Harvest.

The album unfolds as a conceptual suite divided into two acts, blending theatrical rock structures with lyrical piano passages, folk-tinged acoustic moments, and electric guitar interplay that traces a narrative arc from innocence to disillusionment. Lead guitarist Edgardo Rapetti and rhythm guitarist Julio Presas alternate melodic leads and harmonic support in conversational exchanges, while guest pianist Litto Nebbia adds textural depth to select sections. The rhythm section of bassist Omar Constanzo and drummer Carlos Riganti underpins the progression with measured backbeats, subtle percussive accents, and anchored low-end pulses that guide shifts between intimate reflections and more forceful ensemble statements.

Ohperra Vida De Beto runs as 16 interlocked scenes that play like two side-long suites, with three guitars and drums driving most of the weight while brief piano and string touches widen the frame. Riffs land in dense, muscular blocks, then break for acoustic passages and electroacoustic interplays, with frequent tempo resets and sharp turns that open space for terse lead lines and sudden, frenetic twists. Vocals occupy much of the runtime, so the instrumental surges arrive as concentrated bursts—short escalations, clipped pauses, and quick pivots between darker tension and lighter, piano-dusted relief. Some sections feel intentionally fragmentary or direct, but constant shifts in pace, texture, and intensity keep the through-line moving.

The titles read like a staged life-course and an internal debate, laid out as consecutive “scenes” more than standalone songs: pre-growth → birth → lullaby → growth, then a school block (“¡Es Alumno!,” “Compañero de Banco”) that stretches into duration (“Un Largo Tiempo”) before the first rupture (“¡Alguien Llega!”). Side B turns inward and abstract: “La Angustia” sets the emotional center, “Él Te Ayudará” introduces an outside voice or intervention, then “¿Forma o Esencia?” and “La Teoría Positiva” frame a philosophical argument. “¡Soy Tu Vida!” reads like a direct address from the concept’s narrator or conscience, followed by “Reflexión,” a flash of “Luz en la Vida,” and a final “Conclusión” that seals the arc.

Acto I – Opera Dulce
A1. “Precimiento” [Pre-growth] (2:43)
A2. “Nacimiento” [Birth] (2:58)
A3. “Canción De Cuna” [Lullaby] (0:45)
A4. “Crecimiento” [Growth] (2:47)
A5. “¡Es Alumno!” [He’s a Student!] (1:01)
A6. “Compañero De Banco” [Desk Mate] (2:47)
A7. “Un Largo Tiempo” [A Long Time] (4:04)
A8. “¡Alguien Llega!” [Someone Arrives!] (0:41)

Acto II – Opera Amarga
B1. “La Angustia” [Anguish] (3:45)
B2. “Él Te Ayudará” [He Will Help You] (1:12)
B3. “¿Forma O Esencia?” [Form or Essence?] (3:26)
B4. “La Teoría Positiva” [The Positive Theory] (3:47)
B5. “¡Soy Tu Vida!” [I’m Your Life!] (2:49)
B6. “Reflexión” [Reflection] (4:47)
B7. “Luz En La Vida” [Light in Life] (0:15)
B8. “Conclusión” [Conclusion] (3:04) – Presas, Constanzo

Materia Gris recorded the album in 1972 with Enrique Londaits producing and Carlos García alongside Carlos López engineering. Harvest originally issued it as catalog 64011; the release was licensed from EMI Argentina.

Postlude

After Ohperra Vida de Beto, Materia Gris broke up while developing a second album titled Pandemonium, which never reached release. Carlos Riganti joined Alas and played backup to Carlos Cutaia and Raúl Porchetto, then relocated to Spain in 1979. Omar Constanzo stayed active by forming and fronting Naranja Mecánica in the mid-1970s, issuing the group’s lone LP Revive el sentimiento in 1977. Julio Presas continued under his own name with Amaneciendo en la Cruz del Sur (1978).

Discography: