Analogue programmable drum machine

Eko ComputeRhythm

Six rows of sixteen illuminated buttons put the rhythm in front of the player.

The accompaniment years →
Samples From Mars — Eko ComputerhythmView full scan ↗
Samples From Mars — Eko ComputerhythmKVR news item date · Samples From Mars via KVR AudioSource & credit ↗

Retrospective histories place Eko’s Italian ComputeRhythm in the early 1970s. Its illuminated sixteen-step matrix and punch-card system document an early approach to writing rhythms, although an original dated launch announcement remains to be found.

The machine in the record

Cover artwork for Metronomy — Love Letters.
Love Letters places Joseph Mount’s Eko computer-rhythm account beside the named songs; the cover identifies the album, not every pattern or voice setting.

Metronomy / Love Letters.

Joseph Mount names the Eko ComputeRhythm among the machines behind Love Letters, and points to “The Upsetter” and “Monstrous” as places to hear it. The old Italian box becomes part of an album that made limitations feel like a writing method.

Read Metronomy: Joseph Mount & Ash Workman — Recording Love Letters ↗

More records in the archive

The machine keeps turning up.

Reported association

Joseph Mount / Metronomy / Unspecified production setup

An equipment index quotes a Sound On Sound feature naming Joseph Mount’s Eko ComputeRhythm among the drum machines used in his working setup.

Read Joseph Mount and the Eko ComputeRhythm ↗
01 // Early programmable rhythm instrument

A rhythm laid out in lights

Six rows of sixteen illuminated buttons put the rhythm in front of the player. The surviving specimen’s panel numbers the steps across the top and bottom, with percussion selectors and faders beside the rows. Rather than selecting only a named preset, a player can see the positions that make up the written pattern.

Eko ComputeRhythm surviving specimen — Samples From Mars / KVR Audio ↗ An Eko of Future Past: Rare Drum Machine Still Fascinates, 50 Years On ↗ Akai MPC60 Revisited ↗

02 // Early programmable rhythm instrument

Cards beside the console

The specimen photograph shows patterned cards beside the ComputeRhythm’s console. Retrospective accounts describe punch cards feeding stored rhythms into the machine, alongside its twelve analogue percussion sounds. The cards make pattern storage a physical part of the instrument’s story, separate from the circuits producing the sounds. The surviving image does not establish when this particular unit was made.

An Eko of Future Past: Rare Drum Machine Still Fascinates, 50 Years On ↗ Akai MPC60 Revisited ↗

03 // Early programmable rhythm instrument

Franke’s running rhythm

Chris Franke’s 1994 recollection describes an EKO-made Italian rhythm controller around Tangerine Dream’s Green Desert sessions. He could delete, skip and change its lit-step rhythm while it ran, and later added trigger outputs. He did not print the ComputeRhythm product name, and his remembered eight rows differ from the six-row specimen. His account preserves a working method without settling exact model or revision.

Tangerine Dream: Changing Use of Technology, Part 1: 1967–1977 ↗

04 // Early programmable rhythm instrument

Two songs on Love Letters

Joseph Mount identifies an Eko ComputeRhythm among the drum machines used on Metronomy’s Love Letters. He names ‘The Upsetter’ and ‘Monstrous’ as places where it can be heard. That is model-specific participant testimony for two songs, not a claim about every album track or a reconstruction of each voice and pattern.

Metronomy: Joseph Mount & Ash Workman — Recording Love Letters ↗

Recording and working accounts

Explore 3 source accounts

Sources

  1. Eko ComputeRhythm surviving specimen — Samples From Mars / KVR Audio
  2. An Eko of Future Past: Rare Drum Machine Still Fascinates, 50 Years On
  3. Akai MPC60 Revisited
  4. Eko ComputeRhythm service manual index
  5. Tangerine Dream: Changing Use of Technology, Part 1: 1967–1977
  6. Metronomy: Joseph Mount & Ash Workman — Recording Love Letters

The visual archive

Further visual evidence.

Sources for images shown earlier (2)
Additional visual sources (1)

Original publications and related image sources.

Machine Museum image viewer

Period image shown in the dossier.