Iconic rock songs like Fleetwood Mac's Dreams—written by Stevie Nicks in about ten minutes and later hitting No.1—Mad Season's River of Deceit, inspired by The Prophet and defined by Layne Staley's spiritual approach, and The Allman Brothers Band's Melissa, born from Gregg Allman's teenage writing and a pivotal grocery-store moment, each reflect rapid bursts of inspiration that shaped enduring classics. Blackfoot's Train, Train, drawing from Shorty Medlocke's 1930s roots, paired a steam-locomotive harmonica intro with late-70s success and platinum status, illustrating the genre-spanning origins of enduring songs.