Radio Formats

The clock on the wall of the programme director's office was as decisive as any piece of studio gear.

Commercial radio in the UK and North America operated on strict clock formats: each hour sliced into news breaks, jingles, spots and music sweeps, with individual tracks typically expected to land between two-and-a-half and three-and-a-half minutes. Programme directors could and did pull records that ran long. Producers knew this, and the knowledge reached the studio floor before the tape rolled.

The consequence was structural. A track built around a sequencer loop could, in principle, run forever — the twelve-inch single existed precisely to exploit that freedom for clubs — but the seven-inch edit had to breathe differently.

Introductions were trimmed, middle-eights compressed, outros faded before the groove had said its piece. Trevor Horn's productions from the early eighties show the calculation plainly: the album version and the radio edit were different arguments made in the same language.

FM synthesis and sampled drum patches made tight, punchy arrangements easier to achieve. Where a live drum kit had needed room to bloom — and the ambience to match — a Linn LM-1 hit and stopped, cleanly. That suited a format where clarity at modest listening levels on a car radio was the actual target. Dense arrangements with long reverb tails competed badly on a medium with limited dynamic range and a three-and-a-half-inch speaker behind the dashboard.

None of this was secret or even controversial at the time. A&R managers submitted running times alongside everything else. The edit was not an afterthought but a parallel product, often cut from a different multitrack assembly. Splicing tape to reshape a song to format requirements was skilled work; the grease pencil mark that shortened an intro by eight bars was as deliberate as any synth patch choice made earlier in the session.

What the format constrained, producers found ways to use. Compression built for intelligibility became an aesthetic. Brevity enforced from outside became a virtue claimed as intention.