I feel I recall hearing this sung by Brownie McGhee and Sonny Terry. Could so, but maybe not, and may instead have been Alan Lomax's recording, on the same EP where he sang 'I'm A Rambler I'm A Gambler', a true favourite of mine.

Long summer day make a white man lazy, long summer day
Long summer day make a black man crazy, long summer day
Long summer, long summer, long summer day
Long summer, long summer, long summer day