Complex sentence: The main vocalists were Elaine Caswell, Ellen Foley, Gina Taylor, and Deliria Wilde Her vocals were actually the combined vocals of Laura Theodore, Holly Sherwood and Laurie Sargent.
Split into simpler sentences: The main vocalists were Elaine Caswell, Ellen Foley, Gina Taylor, and Deliria Wilde. Wilde's vocals were actually the combined vocals of Laura Theodore, Holly Sherwood and Laurie Sargent.