Apparently in ’90, the guitar corps of Def Leppard—Steve “Steamin'” Clark, Phil Collen, and Rick Savage—were so pervasive that they only needed billed as “Steve, Phil & Sav.” This ad appeared in Guitar for the Practicing Musician, January 1990, as they were still riding the wave of the multi-platinum Hysteria, the very height of the band’s success. It’s not clear if there’s actually a direct correlation between using GHS strings and making giant albums, as the ad seems to imply.