Size mattered in 1978. Until then seven inches was enough
to satisfy any record lover - but not anymore.
The 12 inch single had been around since the mid-Seventies, and was invented mainly to hype disco songs and for use by DJs - because it could generate more bass than a standard record.
But soon fans started buying 12-inches instead of albums - realising that most disco albums were, in fact, rubbish.
As dance and reggae
took off in the late Seventies, the 12 inch became the only format
to be seen with, peaking in 1983 with New Order's 'Blue Monday',
the biggest selling 12 inch ever.