There’s a tendency to forget one-hit wonders. Given the fleeting appeal of most of today’s music, that’s understandable. But on those rare occasions when someone crafts a perfect nugget of musical goodness and then disappears into thin air, their banishment is lamentable. Such is the case of Wreckless Eric (aka Eric Goulden). Best known for crafting possibly the most perfect pop punk ’n’ roll song ever, “(I’d Go) the Whole Wide World” in 1977, his career includes much more than that still dizzying peak. His vast, post-“Whole Wide World” repertoire embodies all the elements — catchy hooks, words and melodies — that made his signature tune so unforgettable. Wreckless Eric plays a solo show Wednesday, Sept. 25, at Gallery5. Local melody makers Paul Ivey and Harry Gore open. Doors open at 7 p.m. Admission is $8. gallery5arts.org.