Complex sentence: His father was the drum major of the Million Dollar Band, the marching band of the University of Alabama; his mother was a singer and stage actress; his sister was a classically trained pianist, and his brother was a rock guitarist.
Split into simpler sentences: His father was the drum major in a marching band; namely, the Million Dollar Band at the University of Alabama. His mother was a singer and stage actress, his sister was a classically trained pianist, and his brother was a rock guitarist.