I can't tell you my favourite. Changes all the time but there are a few that will always be up there. New Order's True Faith, Bowie's Life on Mars, Portishead's Roads, or even this fella. He could belt out a song:
Suspicious Minds by the King
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But Freda Paynes's Band of Gold is DEFINITELY up there in my favouritest and greatest songs.
Much prefer "always on my mind" The words are far better.