The Roland CompuRhythm CR-78 is a drum machine launched in 1978.

Although primitive by today's standards, the CR-78 represented an important advance in drum machine technology at the time, particular in allowing users to program and store their own drum patterns. The wood effect cabinet and preset rhythms of the CR-78 such as Waltz, Bossa Nova and Rhumba suggest that it was seen by its designers as primarily an accompaniment for an electric organ, but the CR-78 became one of the favorite instruments of Pop and electronic musicians in the late 1970s and early 1980s. Famous songs that make prominent use of the Roland CR-78 include "Heart of Glass" by Blondie and "In the Air Tonight" by Phil Collins.

The CR-78 used analog drum voices, which sounded very little like real percussion instruments, but they instead had their own distinctive sounds. The unit also incorporated an early Intel microprocessor to provide digital control of its functions.

Previous Roland drum machines had offered only a selection of preset rhythms. The CR-78's key new feature was that in addition to offering 34 preset rhythms, it provided four programmable memory locations for storing patterns created by the user. These could be created by using step programming with the WS-1 box, which was available as an optional extra. . The four user patterns were stored in RAM memory; when the CR78 was switched off, the contents of the RAM was maintained by a NiCd rechargeable battery.

Roland (Frankish: Hruodland) (died 14 August 778) was a Frankish military leader under Charlemagne who became one of the principal figures in the literary cycle known as the Matter of France. Historically, Roland was military governor of the Breton March, with responsibility for defending the frontier of Francia against the Bretons. His only historical attestation is in Einhard's Vita Karoli Magni, which describes him as Hruodlandus Brittannici limitis praefectus ("Roland, prefect of the limits of Brittany") when narrating his death at the Battle of Roncesvalles, when the rearguard, under his command, and the baggage train of a Frankish army was beset by rebellious Basques.

Roland's death during retreat from the Battle of Roncevaux Pass in Iberia was transmogrified in later medieval and Renaissance literature. He became the chief paladin of the emperor Charlemagne and a central figure in the legendary material surrounding him, collectively known as the Matter of France. The first and most famous of these epic treatments was the Old French Chanson de Roland of the eleventh century. Two masterpieces of Italian Renaissance poetry, the Orlando innamorato and Orlando furioso, are even further detached from history than the earlier Chansons. Roland is poetically associated with his sword Durendal, his horse Veillantif, and his horn Oliphaunt.

Philip David Charles "Phil" Collins, LVO (born 30 January 1951) is an English singer-songwriter, drummer, pianist and actor best known as a drummer and vocalist for British progressive rock group Genesis and as a solo artist.

Collins sang the lead vocals on several chart hits in the United Kingdom and the United States between 1975 and 2010, either as a solo artist or with Genesis. His singles, sometimes dealing with lost love, ranged from the drum-heavy "In the Air Tonight", dance pop of "Sussudio", piano-driven "Against All Odds", to the political statements of "Another Day in Paradise".

Collins's professional music career began as a drummer, originally in a band called The Real Thing with Andrea Bertorelli, who later became his first wife. Collins played drums and shared lead vocals (with Brian Chatton) in Flaming Youth which recorded one album, (Ark II). In 1970, he took over drums for Genesis, which had already recorded two albums. In Genesis, Collins originally supplied backing vocals for front man Peter Gabriel, singing lead on only two songs: "For Absent Friends" from 1971's Nursery Cryme album and "More Fool Me" from Selling England by the Pound, which was released in 1973. Following Gabriel's departure in 1975, Collins became the group's lead singer.