From Wiktionary, the free dictionary
From pre- + blues.
preblues (comparative more preblues, superlative most preblues)
- From the period before blues music.
1988 April 8, David Whiteis, “Yank Rachell--Chicago Style/Hip Linkchain--Airbusters”, in Chicago Reader[1]:Even among the (rapidly disappearing) survivors of his generation, Yank Rachell is nearly alone in his persistent use of traditional, even preblues forms.
