Some of Coster's best-known compositions are "Europa (Earth's Cry Heaven's Smile)", "Flor D'Luna (Moonflower)" and "Dance, Sister, Dance (Baila Mi Hermana)" performed by Santana and "The Perfect Date" performed by Vital Information.
Zu den bekanntesten Kompositionen Costers zählen „Europa (Earth's Cry Heaven's Smile)“, „Flor D'Luna (Moonflower)“ and „Dance, Sister, Dance (Baila Mi Hermana)“ für Santana und „The Perfect Date“ für Vital Information.