For those who grew up in New York City, long before "American Idol" contestants were competing in your living room, neighborhood idols were competing outside your window. In the 1950s, every borough featured street-corner harmonizers hoping to make it big in the nascent rock and roll industry.

A free lecture at Sid Jacobson Jewish Community Center in East Hills will transport you back to the days when Dion & the Belmonts (pictured) ruled the Bronx, the Del-Vikings held court in Brooklyn and the Harptones were mainstays in Manhattan.

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"They All Sang on the Corner: The Roots of Doo-Wop and Rock 'n' Roll," sponsored by the New York Council for the Humanities and presented by music historian Robert L. Cohen, is Tuesday at 10:30 a.m.

For more information, call 516-484-1545 or go to