What is the fine-grained topic of the following text: While some band originals – like “Soul Stripper,” “Show Business” and the grinding “She’s Got Balls” (Bon’s tongue-in-cheek tribute to wife Irene) – showed occasional glimpses of AC/DC’s iron-clad future template, the Youngs evidently hadn’t yet learned how to harness and then unleash their full sonic power. Only return the topic.
AC/DC's early music and development of their sound