If you could be reasonably in tune, keep 4/4 time, and have a British accent (Aussie, Kiwi, Canadian, or South African would do - few Yanks could tell the difference), you were destined for the at least the lower reaches of the Top 40 charts. "Long" hair a plus. Some cool stuff (mainly one-hit wonderstuff) came from the "lesser" bands: the Dave Clark Five, The Searchers, The Tremeloes, amongst many others. Not to be confused with the MTV-era Second British Invasion.