Ray Gillen sang for Rondinelli i 1986 da han fikk tilbud om å synge for Black Sabbath. Han var med på skrivingen av musikkalbumetThe Eternal Idol, men på grunn av uoverensstemmelser sluttet han før albumet var ferdig. Tony Martin erstattet ham, og albumet ble innspilt på nytt med Martins vokal.[6] Gillens innspilling var med på en bonusdisk da albumet ble gjenutgitt i «deluxe-utgave» i 2010.[7]
Etter diverse prosjekter ble han med i Badlands der det finnes tre albumutgivelser.[8]
^David V. Moskowitz: The 100 Greatest Bands of All Time: A Guide to the Legends Who Rocked the World (Greenwood, Santa Barbara, California, USA 2015) ISBN 978-1-4408-0339-0, s. 80, bind 1
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