The Roland CR-78 CompuRhythm, introduced in 1978, marked a pivotal step in the evolution of programmable drum machines. Unlike earlier preset rhythm units aimed at the home organ market, the Roland CR-78 featured a built-in microprocessor that allowed users to program and store up to four custom patterns.
Although the programming method was limited and required an optional WS-1 “write switch,” it represented a breakthrough in giving musicians control over their rhythms. Alongside its 34 preset rhythms, ranging from rock, disco and waltz to bossa nova, rhumba and tango, the Roland CR-78 included variations such as fills, rolls, breaks, fade-ins and fade-outs, as well as real-time accents.
It offered 14 different analogue percussion voices including bass drum, snare, hi-hat, cymbal, rimshot, tambourine, cowbell, claves and congas, with sliders to balance and accentuate sounds. Housed in a wood cabinet, the Roland CR-78 also included trigger outputs and external clock inputs, enabling synchronisation with sequencers and synthesisers, which made it highly adaptable in professional studio contexts.
The Roland CR-78’s influence was cemented when it became a tool for professional artists pushing the boundaries of rhythm in the late 1970s and early 1980s. It was embraced by Ultravox, Orchestral Manoeuvres in the Dark, Blondie, Hall & Oates and many others for its warm analogue tones and versatile presets.
However, its most iconic cultural moment came with Phil Collins’ 1981 hit In the Air Tonight. The track opens with a haunting programmed pattern from the Roland CR-78, establishing its distinctive mood before Collins’ famous live drum fill enters later in the song. This juxtaposition of machine-like precision and human performance became one of the most recognisable musical moments of the decade, elevating the Roland CR-78 from a rhythm tool to a symbol of atmosphere and drama in popular music.
The Roland CR-78’s sound palette, particularly its ticking hi-hats, crisp rimshots and synthetic yet organic texture, has since remained iconic, inspiring emulations, software recreations and sample packs that preserve its character for modern producers. It bridged the gap between simple preset boxes and the programmable step-sequenced drum machines that would follow, such as the Roland TR-808 and Roland TR-909, making it an essential stepping stone in Roland’s legendary drum machine lineage.
Features
- Preset rhythms 34 preset rhythms plus programmable storage for 4 custom patterns
- Variation functions Fill-in, roll, break, fade-in, fade-out, accent
- Instruments 14 analogue percussion voices including bass drum, snare, rimshot, hi-hat, cymbal, tambourine, cowbell, claves, maracas, bongos and congas
- Programming Onboard microprocessor with memory (WS-1 switch required)
- Controls Balance, accent, tempo, volume sliders
- Connectivity Trigger out, external clock in, remote start/stop
