The Progressive label of Pye Records.  All the major companies had labels which were dedicated to 'serious' music; Dawn was Pye's answer to Harvest, Vertigo, Neon and the like.  It offered a broad spectrum of music, from the Modern Jazz of Trio to the Folk of Prelude, by way of the Prog Rock of Irish band Fruup, but with the exception of several hit singles and LPs by Jug / Rock 'n' Roll band Mungo Jerry it failed to sell many records.  Dawn started out in 1969; for a while it experimented with thirty-three-and-a-third rpm EPs, but the experiment was abandoned fairly swiftly, leaving the company to devote its energies to the LP and single formats.  There were some recognizable names on the label: Donovan recorded for it, as did Atomic Rooster, John Kongos and David McWilliams, all of whom had had Chart successes; sadly, they failed to repeat that success for Dawn.  Before it expired, in 1975, Dawn notched up one Top 30 hit with Prelude's, 'After The Goldrush' (DNS-1052), and eight by Mungo Jerry, including two No.1s: 'In The Summertime' (DNX-2502) and 'Baby Jump' (DNX-2505).  Singles were numbered in a DNS-1000 numerical series, EPs on a DNX-2500 one.  Two different label designs were used: the first appeared in several different colours, it was replaced c.1974 with a rather more eye-catching one complete with company sleeve.  The EPs had to be played at 33 1/3 rpm; when some of the Mungo Jerry EPs proved popular they were reissued as 45 rpm singles, on the Pye label, in a 7N-2500 catalogue series, presumably so that they could be played on jukeboxes.