Chuck Berry knows this "sweet little" number of days is the typical gestation period of a possum
WW Norton and Company, Inc. [PAR] Resulting in too many things unpredictable happening beyond control of the big 
.... "Good Night Irene" (1950); "So Long (It's Been Good to Know Ya)" (1951); "On 
Top ... Artists who wrote their own material (Chuck Berry or Buddy Holly) had a lot 
of ..... blues-based solos; The melody is Berry's direct from "Sweet Little Sixteen".