Maggie's Band is an unnamed band. Maggie is the lead singer, and there are three other members.
In the Simpson Family Christmas Photo Album, a photo of her band is seen described as the "Voice of a Generation". The band members are later seen at The Benny Hilton, where the Medbot tells them that she will not be able to make a sound until the baby is born due to the umbilical cord also functioning as a vocal cord. They also refuse to reveal the father of the baby, implying one of them may be the father.