For decades, having a signature guitar was reserved for classic rock legends — the Claptons, the Hendrixes, the Pages, the SRVs and EVHs. But that’s no longer the case. From pop-punk to heavy metal, alt-country to neo-soul, modern artists of all genres and backgrounds are getting signature guitars from companies big and small. Among the titans of the industry, that intentional shift came with a new generation being put into decision-making positions. “When I started, it was largely classic rock and very much a pantheonic Hall of Fame,” Fender’s Executive VP for Products Justin Norvell says of the early 2000s. “It was an end-of-an-iconic-career kind of thing. But it was my feeling that it should be something that people can use to reflect back upon themselves. A Telecaster can mean James Bu...