Every playlist is a ten-song mix created using this format:
Track 1 Hit the ground running
Something to set the pulse racing
Track 2 Something old
A song from 50+ years ago
Track 3 Something new
Released in the last 12 months
Track 4 Something borrowed
A cover, or something based around a familiar sample
Track 5 Something blue
Blues, 'blue(s)' in the title, or just a sad song
Track 6 Take it down
A quiet, contemplative moment
Track 7 Around the world
Beyond the UK / North America
Track 8 Left of centre
Something obscure, experimental or avant-garde
Track 9 Wild card
Free choice
Track 10 Finale
A stirring conclusion
N.B. Whilst 'Hit the ground running' and 'Finale' are fixed at the beginning and end, compilers (including me) may mix up the other categories as they see fit to make the mix flow successfully.