Complex sentence: Avenue D was an American electroclash duo from Miami, Florida, based out of New York City and consisting of Debbie D. (Debbie Attias), and Daphne D. (Daphne Gomez-Mena).
Split into simpler sentences: Avenue D was a US electroclash duo from Miami, Florida, who were based in New York City. They consisted of Debbie D. (Debbie Attias), and Daphne D. (Daphne Gomez-Mena).