Fourscore was the signature tune used by Channel 4 in the United Kingdom for 13 years, from 1982 to 1995. It was composed by Lord David Dundas. Excluding test transmissions prior to launch, the complete 4 minute long piece was played in full only three times on the channel, once at its launch at 16:45 on 1982-11-02, and then again twice when the channel expanded its schedule to include afternoon programming.