Together, they forged some of rock’s most defining sounds: the stuttering, sneering delivery of “My Generation,” the anguished cry of “They’re all wasted!” from “Baba O’Reilly,” and the all-time scream from “Won’t Get Fooled Again.” Two albums — “Tommy” and “Quadrophenia” — were also adapted into successful films in 1975 and 1979, respectively.

Legendary rock band The Who announced their final tour of North America on Thursday, saying after six decades of making music, all good things must come to end.