Complex sentence: The name was derived from Annotto's nickname, Skanotto; they chose Mrs. Skanotto in honor of Annotto's mother, who had taken the band to dinner prior to a competition which required that the band have a name.
Split into simpler sentences: The name was derived from Annotto's nickname, Skanotto. The band chose Mrs. Skanotto in honor of Annotto's mother, who had taken the band to dinner prior to a competition which required that they have a name.